* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    min-height: 100vh;

    background:
        linear-gradient(135deg,
            #0f0c29,
            #302b63,
            #6a11cb);

    color: white;
}

.playground-section {
    padding: 100px 20px;
}

.playground-container {
    max-width: 1300px;
    margin: auto;
}

.playground-header {
    text-align: center;
    margin-bottom: 30px;
}

.playground-header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

.playground-header p {
    color: #d8d8d8;
}

.playground-toolbar {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.playground-toolbar select,
.playground-toolbar button {

    padding: 12px 18px;

    border: none;

    border-radius: 12px;

    font-size: 15px;

    cursor: pointer;
}

.playground-toolbar select {
    background: white;
}

.playground-toolbar button {

    background: linear-gradient(135deg,
            #8b5cf6,
            #a855f7);

    color: white;

    font-weight: 600;
}

.playground-toolbar button:hover {
    transform: translateY(-2px);
}

.playground-grid {

    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: 20px;
}

.editor-card,
.output-card {

    background: rgba(255, 255, 255, 0.08);

    backdrop-filter: blur(15px);

    border: 1px solid rgba(255, 255, 255, 0.15);

    border-radius: 20px;

    overflow: hidden;
}

.card-header {

    padding: 15px;

    background: rgba(255, 255, 255, 0.08);

    font-weight: 600;

    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

#editor {

    width: 100%;

    height: 500px;

    background: #111827;

    color: #f8fafc;

    border: none;

    outline: none;

    resize: none;

    padding: 20px;

    font-size: 15px;

    font-family: Consolas, monospace;
}

#output {

    height: 500px;

    overflow: auto;

    background: #020617;

    color: #22c55e;

    padding: 20px;

    font-size: 14px;

    white-space: pre-wrap;
}

@media(max-width:900px) {

    .playground-grid {
        grid-template-columns: 1fr;
    }

    #editor,
    #output {
        height: 350px;
    }

    .playground-header h1 {
        font-size: 2rem;
    }
}

/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --primary: #7c3aed;
    --primary-rgb: 124, 58, 237;
    --primary-light: #a78bfa;
    --secondary: #3b82f6;
    --accent: #06b6d4;
    --dark-bg: #0a0a1a;
    --dark-surface: #1a1a3e;
    --dark-card: #252550;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-4: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

/* ===== GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    /* Offset anchor-link scroll targets so they clear the fixed navbar */
    scroll-padding-top: 72px;
}

body {
    font-family: "Poppins", sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

.hidden {
    display: none !important;
}

.hidden {
    display: none !important;
}

/* ===== LOADING SCREEN ===== */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark-bg);
    z-index: 10000;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
}

#loading-screen.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader {
    text-align: center;
}

.big-box {
    transition: transform 0.3s ease-in;
}

.big-box {
    transition: transform 0.3s ease-in-out;
}

.big-box:hover {
    transform: scale(1.05);
}

.infinity-loader {
    font-size: 6rem;
    font-weight: 900;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.loading-bar {
    width: 300px;
    height: 6px;
    background: var(--dark-card);
    border-radius: 3px;
    margin: 20px auto;
    overflow: hidden;
}

.loading-progress {
    height: 100%;
    background: var(--gradient-1);
    width: 0%;
    animation: loadProgress 2s ease-in-out forwards;
}

@keyframes loadProgress {
    0% {
        width: 0%;
    }

    100% {
        width: 100%;
    }
}

/* ===== SCROLL TO TOP ===== */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-1);
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: var(--glass-shadow);
}

.scroll-top-btn.visible {
    opacity: 1;
    pointer-events: all;
}

.scroll-top-btn:hover {
    transform: translateY(-5px);
}

/* ===== AUTHENTICATION ===== */
.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 7rem 1rem 3rem;
    background:
        radial-gradient(circle at top left,
            rgba(6, 182, 212, 0.18),
            transparent 34rem),
        radial-gradient(circle at bottom right,
            rgba(124, 58, 237, 0.2),
            transparent 32rem),
        var(--dark-bg);
}

.auth-panel {
    width: min(100%, 460px);
    padding: 2rem;
    border-radius: 8px;
}

.auth-brand {
    text-align: center;
    margin-bottom: 1.75rem;
}

.auth-mark {
    display: inline-grid;
    place-items: center;
    width: 58px;
    height: 58px;
    margin-bottom: 1rem;
    border-radius: 50%;
    background: var(--gradient-1);
    color: white;
    font-family: "Orbitron", sans-serif;
    font-size: 2.4rem;
    font-weight: 900;
}

.auth-brand h1 {
    font-family: "Orbitron", sans-serif;
    font-size: 1.8rem;
    margin-bottom: 0.4rem;
}

.auth-brand p,
.auth-switch,
.form-group small {
    color: var(--text-secondary);
}

.auth-form {
    display: grid;
    gap: 1rem;
}

.form-group {
    display: grid;
    gap: 0.45rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input {
    width: 100%;
    min-height: 46px;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.07);
    color: var(--text-primary);
    font: inherit;
    padding: 0.75rem 0.9rem;
    outline: none;
}

.form-group input:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.22);
}

.auth-submit {
    width: 100%;
    justify-content: center;
    min-height: 48px;
}

.auth-submit[data-loading="true"] {
    opacity: 0.75;
    cursor: wait;
}

.auth-message {
    min-height: 1.4rem;
    font-size: 0.94rem;
}

.auth-message.error {
    color: #fca5a5;
}

.auth-message.success {
    color: #86efac;
}

.auth-message.info {
    color: var(--text-secondary);
}

.auth-switch {
    margin-top: 1.25rem;
    text-align: center;
}

.auth-switch a {
    color: var(--primary-light);
    font-weight: 600;
}

.password-meter {
    height: 6px;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.1);
}

.password-meter span {
    display: block;
    width: 0;
    height: 100%;
    background: #ef4444;
    transition:
        width 0.2s ease,
        background 0.2s ease;
}

.password-meter[data-score="1"] span {
    width: 20%;
}

.password-meter[data-score="2"] span {
    width: 40%;
    background: #f97316;
}

.password-meter[data-score="3"] span {
    width: 60%;
    background: #facc15;
}

.password-meter[data-score="4"] span {
    width: 80%;
    background: #22c55e;
}

.password-meter[data-score="5"] span {
    width: 100%;
    background: var(--gradient-4);
}

/* ===== NAVIGATION BAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 0.875rem 2rem;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 10000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logo-text {
    font-size: 2rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}

.logo-title {
    font-family: "Orbitron", sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    white-space: nowrap;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.75rem;
    align-items: center;
    flex: 1;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-item {
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.2s ease;
    position: relative;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    white-space: nowrap;
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width 0.3s ease;
    border-radius: 1px;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
}

.nav-link:hover::after {
    width: 80%;
}

.dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    font: inherit;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.dropdown-toggle:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
}

.dropdown-toggle[aria-expanded="true"] {
    color: var(--text-primary);
    background: var(--glass-bg);
}

.dropdown-toggle[aria-expanded="true"] .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown-icon {
    font-size: 0.6rem;
    transition: transform 0.2s ease;
    color: var(--text-secondary);
}

.has-dropdown {
    position: relative;
}

.has-dropdown::before {
    content: "";
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 8px;
    background: transparent;
    z-index: 99;
}

.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu {
  opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.dropdown-menu {
  position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 200px;
    max-width: 280px;
    background: var(--dark-surface);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 0.5rem;
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(16px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
    z-index: 100;
    pointer-events: none;
    max-height: 65vh;
    overflow-y: auto;
}

.dropdown-menu-end {
    left: auto;
    right: 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.dropdown-item:hover,
.dropdown-item:focus {
    color: var(--text-primary);
    background: var(--primary);
    outline: none;
}

.dropdown-item.nav-auth-link {
    border: none;
    background: none;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.dropdown-item.nav-auth-link:hover {
    background: var(--primary);
    color: var(--text-primary);
}

.dropdown-item i {
    font-size: 0.875rem;
    width: 16px;
    text-align: center;
    color: var(--accent);
}

.dropdown-item:hover i {
    color: var(--text-primary);
}

.dropdown-divider {
    height: 1px;
    background: var(--glass-border);
    margin: 0.5rem 0;
}

.nav-auth-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.875rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.15s ease;
    white-space: nowrap;
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.04);
    cursor: pointer;
}

.nav-auth-link:hover {
    background: var(--primary);
    color: var(--text-primary);
    border-color: var(--primary);
}

.nav-cta {
    margin-left: 0.75rem;
    padding-left: 0.75rem;
    border-left: 1px solid var(--glass-border);
}

.nav-cta-btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
}

.auth-nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 1px solid var(--glass-border);
}

.nav-user-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
    cursor: default;
}

.nav-buttons {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-shrink: 0;
}

.dark-mode-btn,
.menu-toggle {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dark-mode-btn:hover,
.menu-toggle:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: scale(1.05);
}

.menu-toggle {
    display: none;
}

/* Hide on mobile */
.desktop-only {
    display: flex;
}

/* Mobile nav overlay */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 9990;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    -webkit-tap-highlight-color: transparent;
    cursor: pointer;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Mobile Navigation */
@media (max-width: 1024px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 320px;
        max-width: 100vw;
        height: 100vh;
        background: var(--dark-bg);
        border-left: 1px solid var(--glass-border);
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: 5rem 1.5rem 2rem;
        gap: 0;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        z-index: 9995;
        overflow-y: auto;
        box-shadow: -20px 0 40px rgba(0, 0, 0, 0.4);
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--glass-border);
    }

    .nav-item:last-child {
        border-bottom: none;
    }

    .nav-link,
    .dropdown-toggle {
        width: 100%;
        justify-content: space-between;
        padding: 1rem;
        font-size: 1rem;
    }

    .nav-link::after {
        display: none;
    }

    .dropdown-menu {
    position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: var(--dark-card);
        border-radius: 8px;
        margin: 0.5rem 0 0.5rem 0.5rem;
        padding: 0.25rem 0;
        max-width: none;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        pointer-events: auto;
    }

    .has-dropdown.open .dropdown-menu {
        max-height: 500px;
        padding: 0.5rem 0;
    }

    .dropdown-item {
        padding: 0.875rem 1.5rem;
        font-size: 0.9375rem;
    }

    .desktop-only {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-profile-dropdown .dropdown-menu-end {
        left: 0.5rem;
        right: 0;
    }
}

@media (max-width: 640px) {
    .navbar {
        padding: 0.75rem 1rem;
    }

    .logo-title {
        font-size: 1rem;
    }

    .logo-text {
        font-size: 1.75rem;
    }

    .nav-links {
        width: 100%;
        max-width: 100%;
        padding: 4.5rem 1rem 2rem;
    }

    .nav-link,
    .dropdown-toggle {
        padding: 0.875rem 0.75rem;
        font-size: 0.9375rem;
    }

    .dropdown-item {
        padding: 0.75rem 1.25rem;
    }
}

/* Tablet adjustments */
@media (min-width: 769px) and (max-width: 1024px) {
    .nav-links {
        gap: 0.25rem;
    }

    .nav-link,
    .dropdown-toggle {
        padding: 0.5rem 0.625rem;
        font-size: 0.85rem;
    }
}

/* Active state for current page */
.nav-link.active,
.dropdown-toggle.active {
    color: var(--primary-light);
}

.nav-link.active::after,
.dropdown-toggle.active::after {
    width: 80%;
    background: var(--gradient-1);
}

/* Dropdown arrow rotation on mobile */
.has-dropdown.open .dropdown-icon {
    transform: rotate(180deg);
}

/* Focus visible for accessibility */
.nav-link:focus-visible,
.dropdown-toggle:focus-visible,
.dropdown-item:focus-visible,
.nav-cta-btn:focus-visible,
.dark-mode-btn:focus-visible,
.menu-toggle:focus-visible,
.favorite-btn:focus-visible,
.notes-btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {

    .dropdown-menu,
    .nav-links,
    .dropdown-toggle .dropdown-icon,
    .nav-link::after {
        transition: none;
    }
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 1rem 2rem;
    position: relative;
    overflow: hidden;
    scroll-margin-top: 72px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

/* Starfield effect */
.stars,
.stars2,
.stars3 {
    position: absolute;
    width: 100%;
    height: 100%;
    background: transparent;
}

.stars {
    background-image:
        radial-gradient(2px 2px at 20px 30px, white, transparent),
        radial-gradient(2px 2px at 40px 70px,
            rgba(255, 255, 255, 0.8),
            transparent),
        radial-gradient(2px 2px at 50px 160px, white, transparent),
        radial-gradient(2px 2px at 90px 40px, white, transparent),
        radial-gradient(2px 2px at 130px 80px,
            rgba(255, 255, 255, 0.8),
            transparent),
        radial-gradient(2px 2px at 160px 120px, white, transparent);
    background-size: 200px 200px;
    animation: stars 120s linear infinite;
}

.stars2 {
    background-image:
        radial-gradient(1px 1px at 150px 150px,
            rgba(255, 255, 255, 0.6),
            transparent),
        radial-gradient(1px 1px at 100px 50px, white, transparent),
        radial-gradient(1px 1px at 50px 200px,
            rgba(255, 255, 255, 0.6),
            transparent);
    background-size: 300px 300px;
    animation: stars 80s linear infinite reverse;
}

.stars3 {
    background-image:
        radial-gradient(3px 3px at 300px 400px,
            rgba(167, 139, 250, 0.8),
            transparent),
        radial-gradient(2px 2px at 200px 600px, #3b82f6, transparent);
    background-size: 500px 500px;
    animation: stars 100s linear infinite;
}

@keyframes stars {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(-1000px);
    }
}

.hero-content {
    max-width: 100%;
    text-align: center;
}

.hero-title {
    margin-bottom: 2rem;
}

.title-line {
    display: block;
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.main-title {
    font-family: "Orbitron", sans-serif;
    font-size: 4rem;
    font-weight: 900;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
    margin-bottom: 1rem;
}

.subtitle {
    display: block;
    font-size: 1.8rem;
    color: var(--accent);
    font-weight: 300;
}

.typing-container {
    height: 40px;
    margin: 2rem 0;
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.typing-text {
    color: var(--primary-light);
    font-weight: 600;
}

.typing-cursor {
    animation: blink 1s infinite;
    color: var(--accent);
}

@keyframes blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin: 2rem 0;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-light);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    width: 100%;
    justify-content: space-around;
    margin-top: 3rem;
    gap: 2rem;
}

.stat-box {
    text-align: center;
    padding: 2.5rem;
    background: var(--glass-bg);
    border-radius: 15px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    min-width: 0;
    flex: 1;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-3);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    40% {
        transform: translateX(-50%) translateY(-10px);
    }

    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ===== SECTIONS ===== */
.section {
    padding: 6rem 2rem;
    position: relative;
    /* Ensure anchor jumps land below the fixed navbar */
    scroll-margin-top: 72px;
}

/* Universal safety-net: any section/div with an id used as an anchor target */
section[id] {
    scroll-margin-top: 72px;
    /* Contain stacking contexts (backdrop-filter on cards) so they can't
     overflow onto the fixed navbar */
    isolation: isolate;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-family: "Orbitron", sans-serif;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
}

.title-icon {
    font-size: 2.5rem;
    background: none;
    -webkit-text-fill-color: initial;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

/* ===== TOPICS GRID ===== */
.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.topic-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.topic-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-1);
}

.topic-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--glass-shadow);
    border-color: var(--primary-light);
}

.topic-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.topic-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.topic-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.topic-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Topic Mastery Progress */
.topic-mastery {
    margin-top: 1rem;
    padding-top: 0.8rem;
    border-top: 1px solid var(--glass-border);
}

.mastery-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.4rem;
}

.mastery-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.mastery-stats {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.mastery-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: 0.3rem;
}

.mastery-fill {
    height: 100%;
    border-radius: 999px;
    background: var(--gradient-1);
    transition: width 0.6s ease;
}

.mastery-percentage {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-light);
}

/* Color the fill based on progress level */
.mastery-fill[style*="width: 10"],
.mastery-fill[style*="width: 2"],
.mastery-fill[style*="width: 3"],
.mastery-fill[style*="width: 4"] {
    background: linear-gradient(90deg, #ef4444, #f97316);
}

.mastery-fill[style*="width: 5"],
.mastery-fill[style*="width: 6"],
.mastery-fill[style*="width: 7"] {
    background: linear-gradient(90deg, #f97316, #eab308);
}

.mastery-fill[style*="width: 8"],
.mastery-fill[style*="width: 9"],
.mastery-fill[style*="width: 100"] {
    background: linear-gradient(90deg, #22c55e, #06b6d4);
}

.difficulty-badge {
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.easy {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.medium {
    background: rgba(251, 191, 36, 0.2);
    color: #fbbf24;
}

.hard {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

/* ===== PRACTICE SECTION ===== */
.practice-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.search-bar {
    position: relative;
    display: flex;
    align-items: center;
    max-width: 400px;
}

.search-bar i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-bar input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
    padding-right: 3rem;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
}

/* ===== CLEAR SEARCH BUTTON ===== */

.clear-search-btn {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);

    width: 28px;
    height: 28px;

    border: none;
    border-radius: 50%;

    background: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);

    cursor: pointer;

    display: none;

    align-items: center;
    justify-content: center;

    font-size: 1rem;
    font-weight: bold;

    transition: all 0.3s ease;
}

.clear-search-btn:hover {
    background: rgba(255, 77, 109, 0.2);
    color: #ff4d6d;
    transform: translateY(-50%) scale(1.1);
}

.clear-search-btn.visible {
    display: flex;
}

.search-bar {
    position: relative;
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.7rem 1.5rem;
    border-radius: 50px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filter-btn.active,
.filter-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Problem Counter CSS */
.problem-counter-container {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    padding: 0 0.5rem;
    font-weight: 500;
}

.problem-counter-container span {
    color: var(--accent);
    font-weight: 700;
    font-size: 1.1rem;
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.problem-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

/* ===== RECENTLY VIEWED PROBLEMS ===== */

.recent-problem {
    padding: 10px 12px;
    margin: 8px 0;
    border-radius: 8px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.recent-problem:hover {
    transform: translateX(5px);
}

.recent-problem:not(:last-child) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--glass-shadow);
    border-color: var(--accent);
}

/* ===== FAVORITE BUTTON ===== */

.favorite-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-secondary);
    cursor: pointer;

    display: flex;
    align-items: center;
    justify-content: center;

    transition: all 0.3s ease;

    margin-left: auto;
    margin-right: 0.7rem;

    backdrop-filter: blur(10px);
}

.favorite-btn:hover {
    transform: scale(1.12);
    color: #ff4d6d;
    border-color: #ff4d6d;
    box-shadow: 0 0 15px rgba(255, 77, 109, 0.35);
}

.favorite-btn.active {
    background: rgba(255, 77, 109, 0.15);
    color: #ff4d6d;
    border-color: #ff4d6d;
}

.notes-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    margin-left: 0.5rem;
    backdrop-filter: blur(10px);
}

.notes-btn:hover {
    transform: scale(1.12);
    color: #fbbf24;
    border-color: #fbbf24;
    box-shadow: 0 0 15px rgba(251, 191, 36, 0.35);
}

.notes-btn.active {
    background: rgba(251, 191, 36, 0.15);
    color: #fbbf24;
    border-color: #fbbf24;
}

.notes-btn i {
    pointer-events: none;
}

.favorite-btn i {
    pointer-events: none;
}

/* Favorites filter special style */

.filter-btn[data-filter="favorites"] {
    color: #ff4d6d;
}

.filter-btn[data-filter="favorites"].active {
    background: #ff4d6d;
    color: white;
    border-color: #ff4d6d;
}

.problem-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    gap: 0.6rem;
}

.problem-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
}

.problem-id {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.problem-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.problem-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.tag {
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    background: var(--dark-card);
    color: var(--accent);
}

.problem-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.problem-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.solve-btn {
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    background: var(--gradient-3);
    border: none;
    color: var(--dark-bg);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.solve-btn:hover {
    transform: scale(1.05);
}

/* ===== ROADMAP SECTION ===== */
.roadmap-container {
    position: relative;
    padding: 2rem 0;
}

.roadmap-progress {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--dark-card);
    transform: translateY(-50%);
    z-index: 0;
}

#roadmapProgress {
    height: 100%;
    background: var(--gradient-4);
    width: 0%;
    transition: width 1.5s ease;
    border-radius: 3px;
}

.roadmap-stages {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.stage {
    text-align: center;
    padding: 2rem;
    background: var(--glass-bg);
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.stage.active {
    background: var(--gradient-1);
    transform: scale(1.05);
}

.stage-marker {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    background: var(--dark-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    border: 3px solid var(--accent);
}

.stage.active .stage-marker {
    background: var(--dark-bg);
    border-color: var(--text-primary);
}

.stage h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.stage ul {
    list-style: none;
    text-align: left;
}

.stage ul li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.stage ul li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--accent);
}

/* ===== ROADMAP TABS & TIMELINE ===== */
.roadmap-selector {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.roadmap-tab {
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.roadmap-tab.active,
.roadmap-tab:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(124, 58, 237, 0.4);
}

.roadmap-content {
    display: none;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.roadmap-content.active {
    display: block;
    opacity: 1;
}

.roadmap-timeline {
    position: relative;
    padding-left: 3.5rem;
    margin: 2rem 0;
}

.roadmap-timeline::before {
    content: "";
    position: absolute;
    left: 20px;
    top: 1.5rem;
    bottom: 1.5rem;
    width: 2px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 0;
}

.roadmap-step {
    position: relative;
    margin-bottom: 2.5rem;
}

.step-marker-dot {
    position: absolute;
    left: -3.5rem;
    top: 0.5rem;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--dark-surface);
    border: 3px solid var(--glass-border);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    z-index: 1;
    transition: all 0.3s ease;
}

.roadmap-step.completed .step-marker-dot {
    border-color: #22c55e;
    color: #22c55e;
    background: rgba(34, 197, 94, 0.1);
    box-shadow: 0 0 12px rgba(34, 197, 94, 0.3);
}

.roadmap-step.active .step-marker-dot {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(124, 58, 237, 0.1);
    box-shadow: 0 0 12px rgba(124, 58, 237, 0.4);
}

.roadmap-step.locked .step-marker-dot {
    opacity: 0.6;
}

.roadmap-step-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.roadmap-step.locked .roadmap-step-card {
    opacity: 0.6;
    pointer-events: none;
}

.roadmap-step.active .roadmap-step-card {
    border-color: rgba(124, 58, 237, 0.5);
    box-shadow: 0 5px 20px rgba(124, 58, 237, 0.15);
}

.roadmap-step.completed .roadmap-step-card {
    border-color: rgba(34, 197, 94, 0.4);
}

.step-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.step-number {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--accent);
}

.step-status-tag {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
}

.step-status-tag.locked-tag {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
}

.step-status-tag.active-tag {
    background: rgba(124, 58, 237, 0.15);
    color: var(--primary);
}

.step-status-tag.completed-tag {
    background: rgba(34, 197, 94, 0.15);
    color: #22c55e;
}

.step-title {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
}

.step-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1.25rem;
}

.step-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 1rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.step-progress {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    flex: 1;
    max-width: 250px;
}

.step-progress-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.step-progress-bar-container {
    width: 100%;
    height: 6px;
    background: var(--dark-card);
    border-radius: 3px;
    overflow: hidden;
}

.step-progress-bar-fill {
    height: 100%;
    background: var(--gradient-4);
    width: 0%;
    transition: width 0.6s ease;
    border-radius: 3px;
}

.roadmap-step.completed .step-progress-bar-fill {
    background: linear-gradient(90deg, #22c55e, #10b981);
}

/* ===== ROADMAP DETAIL MODAL ===== */
.roadmap-modal-content {
    max-width: 750px;
    background: var(--dark-surface);
    border: 1px solid var(--glass-border);
}

.step-badge-tag {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: white;
    background: var(--primary);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    margin-right: 0.8rem;
}

.roadmap-step-theory h4,
.roadmap-step-complexity h4,
.roadmap-step-quiz h4,
.roadmap-step-problems h4 {
    font-size: 1.1rem;
    color: var(--accent);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 0.4rem;
}

.theory-text {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.theory-text p {
    margin-bottom: 0.8rem;
}

.theory-text strong {
    color: var(--text-primary);
}

.complexity-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5rem;
}

.complexity-table th,
.complexity-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.complexity-table th {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.complexity-table td {
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.roadmap-problems-list {
    list-style: none;
    padding: 0;
    margin-bottom: 1.5rem;
}

.roadmap-problem-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1.2rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    margin-bottom: 0.8rem;
    transition: all 0.3s ease;
}

.roadmap-problem-item:hover {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.04);
}

.roadmap-problem-info {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.roadmap-problem-title {
    font-weight: 600;
    color: var(--text-primary);
}

.roadmap-problem-meta {
    display: flex;
    gap: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.roadmap-problem-status {
    font-size: 0.85rem;
    font-weight: 600;
}

.roadmap-problem-status.completed {
    color: #22c55e;
}

.roadmap-problem-status.pending {
    color: var(--text-secondary);
}

/* Roadmap Quiz Styles */
.quiz-question-container {
    margin-bottom: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1.2rem;
}

.quiz-question-text {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
}

.quiz-options-list {
    list-style: none;
    padding: 0;
}

.quiz-option-item {
    padding: 0.6rem 1rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    margin-bottom: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.quiz-option-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.quiz-option-item.selected {
    border-color: var(--primary);
    background: rgba(124, 58, 237, 0.1);
    color: var(--text-primary);
}

.quiz-option-item.correct {
    border-color: #22c55e;
    background: rgba(34, 197, 94, 0.15);
    color: white;
}

.quiz-option-item.incorrect {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.15);
    color: white;
}

.quiz-feedback {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.quiz-feedback.correct {
    color: #22c55e;
}

.quiz-feedback.incorrect {
    color: #ef4444;
}

.quiz-instruction-text,
.problems-instruction-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-style: italic;
}

#roadmapStepSubmitQuizBtn {
    margin-bottom: 1.5rem;
}

/* ===== INTERVIEW SECTION ===== */
.interview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.interview-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.interview-card::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle,
            rgba(124, 58, 237, 0.1) 0%,
            transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.interview-card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.interview-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    position: relative;
}

.interview-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    position: relative;
}

.card-btn {
    padding: 0.8rem 2rem;
    border-radius: 50px;
    background: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.card-btn:hover {
    background: var(--accent);
    color: var(--dark-bg);
}

/* ===== DASHBOARD SECTION ===== */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.dashboard-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 1.25rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.dashboard-card:hover {
    border-color: var(--primary);
    transform: translateY(-6px);
    box-shadow: 0 15px 30px rgba(124, 58, 237, .25);
}

.dashboard-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
    padding-bottom: 0.5rem;
    position: relative;
    transition: color 0.3s ease;
}

.dashboard-card:hover h3 {
    color: var(--primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    text-align: center;
}

.stat-item {
    padding: 1rem;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-3);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-item {
    border-radius: 14px;
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: scale(1.05);
}

.stat-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.stat-value {
    transition: transform 0.3s ease;
}

.stat-item:hover .stat-value {
    transform: scale(1.15);
}

.activity-list,
.leaderboard-list {
    max-height: 400px;
    overflow-y: auto;
}

.activity-item,
.leaderboard-item {
    padding: 1rem;
    margin-bottom: 0.8rem;
    background: var(--dark-card);
    border: 1px solid transparent;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.leaderboard-item.current-user {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px rgba(99, 102, 241, 0.35);
}

.leader-rank {
    min-width: 3rem;
    font-weight: 700;
    color: var(--accent);
}

.leader-avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.12);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
}

.leader-name {
    flex: 1;
    min-width: 0;
    font-weight: 600;
    overflow-wrap: anywhere;
}

.leaderboard-item {
    flex-wrap: wrap;
}

.leader-xp {
    color: var(--text-secondary);
    font-weight: 700;
    white-space: nowrap;
}

.activity-item .activity-type {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.activity-item {
    justify-content: space-between;
}

.activity-icon {
    color: var(--accent);
}

.badges-container,
.badges-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.badge {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--gradient-2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    position: relative;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.badge:hover {
    transform: scale(1.1);
}

.badge.locked {
    background: var(--dark-card);
    opacity: 0.5;
}

.badge-tooltip {
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark-card);
    padding: 0.5rem 0.6rem;
    border-radius: 8px;
    font-size: 0.75rem;
    white-space: normal;
    text-align: center;
    width: min(220px, max-content);
    line-height: 1.3;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.badge:hover .badge-tooltip,
.badge:focus .badge-tooltip {
    opacity: 1;
}

.empty-state {
    color: var(--text-secondary);
    font-style: italic;
}

/* ===== ACTIVITY HEATMAP ===== */
.heatmap-card {
    grid-column: 1 / -1;
}

.heatmap-card .heatmap-legend {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.heatmap-card .legend-swatches {
    display: flex;
    gap: 4px;
}

.heatmap-card .legend-swatch {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    background: var(--dark-card);
    border: 1px solid var(--glass-border);
}

.heatmap-card .legend-swatch[data-level="0"] {
    background: rgba(255, 255, 255, 0.05);
}

.heatmap-card .legend-swatch[data-level="1"] {
    background: rgba(124, 58, 237, 0.35);
}

.heatmap-card .legend-swatch[data-level="2"] {
    background: rgba(124, 58, 237, 0.6);
}

.heatmap-card .legend-swatch[data-level="3"] {
    background: rgba(124, 58, 237, 0.8);
}

.heatmap-card .legend-swatch[data-level="4"] {
    background: rgba(124, 58, 237, 1);
}

.heatmap-container {
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-x: auto;
    padding: 0.5rem 0;
    position: relative;
}

.heatmap-months-row {
    display: grid;
    grid-template-columns: 30px repeat(52, minmax(0, 1fr));
    gap: 3px;
    margin-bottom: 2px;
    font-size: 0.7rem;
    color: var(--text-secondary);
    position: sticky;
    top: 0;
    background: transparent;
    z-index: 1;
    min-height: 14px;
}

.heatmap-month-label {
    grid-row: 1;
    white-space: nowrap;
    overflow: visible;
}

.heatmap-grid {
    display: flex;
    gap: 3px;
    width: 100%;
    overflow: hidden;
    min-width: 750px;
}

.heatmap-container {
    overflow-x: auto;
}

.heatmap-weekday-labels {
    display: flex;
    flex-direction: column;
    gap: 3px;
    margin-right: 6px;
    min-width: 26px;
    flex-shrink: 0;
}

.heatmap-weekday-label {
    flex: 1;
    min-width: 26px;
    font-size: 0.65rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    overflow: visible;
    white-space: nowrap;
}

.heatmap-week {
    display: flex;
    flex-direction: column;
    gap: 3px;
    flex: 1 1 0;
    min-width: 0;
}

.heatmap-day {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid transparent;
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease;
    position: relative;
    flex-shrink: 0;
}

.heatmap-day:hover {
    border-color: var(--accent);
    filter: brightness(1.3);
}

.heatmap-day[data-level="0"] {
    background: rgba(255, 255, 255, 0.05);
}

.heatmap-day[data-level="1"] {
    background: rgba(124, 58, 237, 0.35);
}

.heatmap-day[data-level="2"] {
    background: rgba(124, 58, 237, 0.6);
}

.heatmap-day[data-level="3"] {
    background: rgba(124, 58, 237, 0.8);
}

.heatmap-day[data-level="4"] {
    background: rgba(124, 58, 237, 1);
}

.heatmap-day[data-future="true"] {
    background: transparent;
    border-color: transparent;
    cursor: default;
}

.heatmap-day[data-future="true"]:hover {
    border-color: transparent;
    transform: none;
    box-shadow: none;
}

.heatmap-tooltip {
    position: fixed;
    background: var(--dark-card);
    color: var(--text-primary);
    padding: 0.6rem 0.9rem;
    border-radius: 8px;
    font-size: 0.82rem;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s ease;
    z-index: 99999;
    white-space: nowrap;
    border: 1px solid var(--glass-border);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    left: 0;
    top: 0;
}

.heatmap-tooltip.visible {
    opacity: 1;
}

.heatmap-tooltip strong {
    color: var(--accent);
    display: block;
    margin-bottom: 0.2rem;
}

/* ===== GAMIFICATION SECTION ===== */
.gamification-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.xp-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(10px);
}

.xp-bar-container {
    position: relative;
    height: 30px;
    background: var(--dark-card);
    border-radius: 15px;
    overflow: hidden;
    margin: 1.5rem 0;
}

.xp-bar {
    height: 100%;
    background: var(--gradient-4);
    width: 0%;
    transition: width 1s ease;
    border-radius: 15px;
}

.xp-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: 600;
    font-size: 0.9rem;
    color: white;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.level-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: var(--gradient-2);
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
}

.badges-showcase {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(10px);
}

.badges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.badge-lg {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.badge-lg:hover {
    transform: scale(1.1) rotate(10deg);
}

#dailyChallengeCard {
    min-height: 250px;
    position: relative;
    overflow: hidden;
}

#dailyChallengeCard p {
    margin-bottom: 1rem;
}

#dailyChallengeCard::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg,
            transparent,
            rgba(255, 255, 255, 0.08),
            transparent);
    transform: translateX(-100%);
    transition: transform 0.8s ease;
}

#dailyChallengeCard:hover::before {
    transform: translateX(100%);
}


.profile-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--glass-border);
    flex-wrap: wrap;
}

.profile-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.profile-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.3rem;
    color: var(--text-primary);
}

.profile-level {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.3rem;
}

.profile-join {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.profile-stats {
    display: grid;
    /* Automatically wraps columns if they shrink below 110px */
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    gap: 0.8rem;
    /* Slightly reduced gap for better fit */
    margin-bottom: 1.5rem;
}

.profile-stat {
    text-align: center;
    padding: 0.8rem;
    /* Slightly reduced padding to prevent text squishing */
    background: var(--dark-card);
    border-radius: 12px;
}

.profile-stat-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-3);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.profile-stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.progress-bar-container {
    padding: 0.5rem;
    background: var(--dark-card);
    border-radius: 10px;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.progress-bar {
    width: 100%;
    height: 10px;
    background: var(--dark-surface);
    border-radius: 5px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-4);
    border-radius: 5px;
    transition: width 1s ease;
    width: 0%;
}

/* ===== CHATBOT WIDGET ===== */
.chatbot-widget {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 9999;
}

.chatbot-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-1);
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--glass-shadow);
    transition: all 0.3s ease;
    position: relative;
}

.chatbot-toggle:hover {
    transform: scale(1.1);
}

.chatbot-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 24px;
    height: 24px;
    background: #ef4444;
    color: white;
    border-radius: 50%;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.chatbot-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 350px;
    height: 500px;
    background: var(--dark-surface);
    border-radius: 20px;
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--glass-border);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.chatbot-window.hidden {
    display: none;
}

.chatbot-header {
    background: var(--gradient-1);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chatbot-header h4 {
    font-size: 1.1rem;
}

.chatbot-close {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 1.2rem;
}

.chatbot-messages {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message {
    max-width: 80%;
    padding: 0.8rem;
    border-radius: 15px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.bot {
    align-self: flex-start;
    background: var(--dark-card);
    color: var(--text-primary);
}

.message.user {
    align-self: flex-end;
    background: var(--primary);
    color: white;
}

.chatbot-input {
    padding: 1rem;
    background: var(--dark-card);
    display: flex;
    gap: 0.5rem;
}

.chatbot-input input {
    flex: 1;
    padding: 0.8rem 1rem;
    background: var(--dark-surface);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    color: var(--text-primary);
}

.chatbot-input input:focus {
    outline: none;
    border-color: var(--primary);
}

.chatbot-input button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    border: none;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.chatbot-input button:hover {
    background: var(--primary-light);
}

.quick-questions {
    padding: 0.5rem 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    background: var(--dark-card);
}

.quick-q {
    padding: 0.4rem 0.8rem;
    border-radius: 15px;
    background: var(--dark-surface);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.quick-q:hover {
    background: var(--primary);
    color: white;
}

/* ===== IMPROVED ALGO ASSISTANT ===== */

.assistant-response h4 {
    color: var(--accent);
    margin: 1rem 0 0.5rem;
    font-size: 0.95rem;
    font-weight: 600;
}

.assistant-response p {
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 0.8rem;
}

.assistant-response pre {
    background: #111827;
    border-radius: 10px;
    padding: 1rem;
    overflow-x: auto;
    margin: 1rem 0;
    border-left: 3px solid var(--primary);
}

.assistant-response code {
    color: #22c55e;
    font-family: "Fira Code", monospace;
    font-size: 0.85rem;
}

.message.loading {
    opacity: 0.8;
    animation: pulse-message 1s infinite;
}

@keyframes pulse-message {
    0% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0.5;
    }
}

.chatbot-messages {
    scroll-behavior: smooth;
}

.message.bot {
    line-height: 1.6;
}

.message.bot pre {
    margin-top: 0.8rem;
}

.message.bot::-webkit-scrollbar {
    height: 6px;
}

.message.bot::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}

/* ===== MODAL ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 26, 0.9);
    backdrop-filter: blur(10px);
    z-index: 2000;
    display: none;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--dark-surface);
    border-radius: 20px;
    width: 100%;
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.modal-header {
    padding: 2rem;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--dark-surface);
    z-index: 10;
}

.modal-header h3 {
    font-size: 1.8rem;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.modal-close:hover {
    color: var(--text-primary);
}

#notesEditor {
    width: 100%;
    min-height: 200px;
    background: var(--dark-card);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 1rem;
    color: var(--text-primary);
    font-family: "Fira Code", monospace;
    font-size: 0.9rem;
    resize: vertical;
    line-height: 1.6;
}

#notesEditor:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.2);
}

.modal-body {
    padding: 2rem;
}

/* ===== NOTES MODAL ===== */

.notes-modal-content {
    max-width: 900px;
}

.modal-body label {
    display: block;

    margin-bottom: 1rem;

    font-size: 1rem;
    font-weight: 600;

    color: var(--text-primary);
}

.notes-textarea {
    width: 100%;

    min-height: 220px;

    padding: 1rem 1.2rem;

    border-radius: 14px;

    border: 1px solid var(--glass-border);

    background: rgba(255, 255, 255, 0.05);

    color: var(--text-primary);

    font-size: 1rem;

    font-family: "Poppins", sans-serif;

    line-height: 1.7;

    resize: vertical;

    outline: none;

    transition:
        border-color 0.3s ease,
        box-shadow 0.3s ease,
        background 0.3s ease;
}

.notes-textarea:focus {
    border-color: var(--primary);

    background: rgba(255, 255, 255, 0.08);

    box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.2);
}

.notes-textarea::placeholder {
    color: var(--text-secondary);

    line-height: 1.6;
}

.topic-theory,
.topic-problems,
.topic-difficulty {
    margin-bottom: 2rem;
}

.topic-theory h4,
.topic-problems h4,
.topic-difficulty h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.topic-theory p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.topic-problems ul {
    list-style: none;
}

.topic-problems li {
    padding: 0.8rem;
    margin-bottom: 0.5rem;
    background: var(--dark-card);
    border-radius: 10px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.topic-problems li:hover {
    background: var(--primary);
    transform: translateX(5px);
}

.modal-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--glass-border);
    text-align: right;
    position: sticky;
    bottom: 0;
    background: var(--dark-surface);
}

/* ===== QUIZ EDITOR MODAL ===== */
/* ===== QUIZ LOADING SCREEN ===== */
.quiz-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 2rem;
    text-align: center;
    width: 100%;
}

.quiz-loading h3 {
    font-family: Orbitron, sans-serif;
    font-size: 1.6rem;
    margin-top: 1rem;
    background: var(--gradient-3);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

#loadingTopicName {
    font-family: 'Fira Code', monospace;
    color: var(--accent);
    font-size: 1.1rem;
    margin-top: 0.5rem;
    letter-spacing: 1px;
}

#quizEditorModal {
    z-index: 3000;
}

#quizEditorModal.active {
    display: flex;
}

.modal.quiz-modal.active {
    display: flex;
}

.quiz-modal-content {
    max-width: 1000px;
    width: 95%;
    max-height: 95vh;
    border-radius: 20px;
    overflow-y: auto;
    overflow-x: hidden;
}

.quiz-modal-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--dark-surface);
    z-index: 10;
    flex-wrap: wrap;
    gap: 1rem;
}

.quiz-problem-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.quiz-topic-badge {
    background: var(--primary);
    color: var(--dark-bg);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
}

.quiz-difficulty {
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.quiz-modal-header h3 {
    width: 100%;
    font-size: 1.5rem;
    background: var(--gradient-3);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0.5rem 0 0 0;
}

.quiz-modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.quiz-modal-close:hover {
    color: var(--text-primary);
}

.quiz-modal-body {
    padding: 20px;
    max-height: 75vh;
    overflow-y: auto;
    overflow-x: hidden;
}

.quiz-layout {
    display: flex;
    min-height: 500px;
    height: 100%;
}

.quiz-problem-panel {
    flex: 1;
    padding: 2rem;
    border-right: 1px solid var(--glass-border);
    background: var(--dark-bg);
    min-width: 0;
    overflow-y: auto;
}

.quiz-editor-panel {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.problem-description h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.problem-description p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.problem-examples h5 {
    font-size: 1rem;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.problem-examples {
    background: var(--dark-card);
    padding: 1rem;
    border-radius: 10px;
    border-left: 3px solid var(--accent);
}

.editor-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1.5rem;
    background: var(--dark-surface);
    border-bottom: 1px solid var(--glass-border);
    flex-wrap: wrap;
    gap: 0.8rem;
}

.language-select {
    background: var(--dark-card);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    padding: 0.5rem 1rem;
    font-family: "Poppins", sans-serif;
    font-size: 0.9rem;
    cursor: pointer;
}

.language-select:focus {
    outline: none;
    border-color: var(--accent);
}

.editor-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.editor-btn {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--glass-border);
    background: var(--dark-card);
    color: var(--text-secondary);
    cursor: pointer;
    font-family: "Poppins", sans-serif;
    font-size: 0.85rem;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.editor-btn:hover {
    background: var(--primary);
    color: var(--dark-bg);
    border-color: var(--primary);
}

.code-editor-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    background: var(--dark-bg);
    min-height: 0;
    height: 100%;
    overflow: hidden;
    border-radius: 0 0 10px 10px;
}

.editor-container {
    flex: 1;
    display: flex;
    position: relative;
    background: var(--dark-bg);
    min-height: 0;
}


.code-editor {
    position: relative;
    flex: 1;
    width: 100%;
    height: 100%;
    background: var(--dark-bg);
    overflow: hidden;
}

.code-textarea {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 45px;
    right: 0;
    width: calc(100% - 45px);
    height: 100%;
    padding: 1rem 1.5rem;
    margin: 0;
    background: transparent;
    color: transparent !important;
    -webkit-text-fill-color: transparent !important;
    caret-color: var(--text-primary);
    font-family: 'Fira Code', Consolas, Monaco, monospace;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: normal;
    word-spacing: normal;
    border: none;
    outline: none;
    resize: none;
    tab-size: 4;
    overflow: auto;
    white-space: pre;
    overflow-x: auto;
    z-index: 2;
    box-sizing: border-box;
}

.code-textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
    -webkit-text-fill-color: var(--text-secondary);
}

.line-numbers {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 45px;
    background: var(--dark-surface);
    border-right: 1px solid var(--glass-border);
    padding: 1rem 0.5rem;
    text-align: right;
    color: var(--text-secondary);
    font-family: "Fira Code", Consolas, Monaco, monospace;
    font-size: 14px;
    line-height: 1.6;
    user-select: none;
    pointer-events: none;
    overflow: hidden;
    z-index: 3;
    white-space: pre;
    box-sizing: border-box;
}

.editor-shortcuts {
    padding: 0.5rem 1.5rem;
    background: var(--dark-surface);
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: 0.8rem;
    display: flex;
    gap: 1.5rem;
}

.editor-shortcuts kbd {
    background: var(--dark-card);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--glass-border);
    font-size: 0.75rem;
}

.quiz-modal-footer {
    padding: 0;
    border-top: 1px solid var(--glass-border);
}

.quiz-output-container {
    background: var(--dark-surface);
}

.output-header {
    padding: 0.8rem 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.output-header:hover {
    background: rgba(0, 0, 0, 0.3);
}

.clear-output-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.clear-output-btn:hover {
    color: #ef4444;
}

.output-content {
    padding: 1rem 1.5rem;
    font-family: "Fira Code", Consolas, monospace;
    font-size: 13px;
    line-height: 1.6;
    max-height: 200px;
    overflow-y: auto;
    color: var(--text-secondary);
}

.output-placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
    font-style: italic;
}

.output-success {
    color: #22c55e;
    background: rgba(34, 197, 94, 0.1);
    padding: 1rem;
    border-radius: 8px;
    margin: 0.5rem 0;
    border-left: 3px solid #22c55e;
    white-space: pre-wrap;
}

.output-error {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
    padding: 1rem;
    border-radius: 8px;
    margin: 0.5rem 0;
    border-left: 3px solid #ef4444;
    white-space: pre-wrap;
}

.output-running {
    color: var(--accent);
    padding: 1rem;
    border-radius: 8px;
    margin: 0.5rem 0;
    border-left: 3px solid var(--accent);
}

.test-cases-container {
    border-top: 1px solid var(--glass-border);
    padding: 1rem;
    max-height: 150px;
    overflow-y: auto;
}

.test-case {
    padding: 0.8rem;
    margin-bottom: 0.5rem;
    background: var(--dark-card);
    border-radius: 8px;
    border-left: 3px solid var(--accent);
    transition: all 0.2s ease;
}

.test-case:last-child {
    margin-bottom: 0;
}

.test-case:hover {
    transform: translateX(3px);
}

.test-case.passed {
    border-left-color: #22c55e;
    background: rgba(34, 197, 94, 0.1);
}

.test-case.failed {
    border-left-color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

.quiz-actions {
    padding: 1.5rem;
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    background: var(--dark-surface);
}

.problem-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.footer {
    background: var(--dark-surface);
    padding: 4rem 2rem 2rem;
    margin-top: 4rem;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    font-family: "Orbitron", sans-serif;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--primary-light);
}

.newsletter-form {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.newsletter-form input {
    flex: 1;
    padding: 0.8rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    color: var(--text-primary);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--primary);
}

.newsletter-form button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-3);
    border: none;
    color: var(--dark-bg);
    cursor: pointer;
    transition: all 0.3s ease;
}

.newsletter-form button:hover {
    transform: scale(1.1);
}

/* ===== NEWSLETTER FORM VALIDATION ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

.newsletter-error {
    display: block;
    width: 100%;
    color: #ef4444;
    font-size: 0.8rem;
    margin-top: 6px;
    min-height: 1.2em;
}

.newsletter-form input.input-error {
    border-color: #ef4444;
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.3);
}

.newsletter-form input.input-success {
    border-color: #22c55e;
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.2);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
}

/* ===== QUIZ SECTION ===== */
.quiz-section {
    background: linear-gradient(180deg,
            var(--dark-bg) 0%,
            var(--dark-surface) 100%);
    padding: 6rem 2rem;
    position: relative;
    scroll-margin-top: 72px;
}

.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.quiz-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    pointer-events: auto !important;
    display: flex;
    flex-direction: column;
    min-height: 320px;
}

.start-quiz-btn {
    pointer-events: auto !important;
    position: relative;
    z-index: 10;
}

/* .quiz-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-4);
} */

.quiz-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-4);
}


.quiz-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--glass-shadow);
    border-color: var(--accent);
}

.quiz-card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.quiz-card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.quiz-card-desc {

    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    line-height: 1.6;
    pointer-events: none;

    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    line-height: 1.6;

}

.quiz-card-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.quiz-count {
    color: var(--text-secondary);
}

.quiz-progress-bar {
    height: 8px;
    background: var(--dark-card);
    border-radius: 4px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.quiz-progress-fill {
    height: 100%;
    background: var(--gradient-4);
    width: 0%;
    transition: width 1s ease;
    border-radius: 4px;
}

.quiz-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.quiz-stats strong {
    color: var(--accent);
}

.start-quiz-btn {
    width: 100%;
    justify-content: center;
}

/* ===== QUIZ MODAL ===== */
.modal.quiz-modal {
    z-index: 3000;
}

.modal.quiz-modal.active {
    display: flex;
}

.quiz-modal-content {
    background: var(--dark-surface);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    width: 100%;
    max-width: 1100px;
    max-height: 90vh;
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.quiz-modal-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--dark-surface);
    z-index: 10;
    flex-wrap: wrap;
    gap: 1rem;
}

.quiz-modal-header h3 {
    width: 100%;
    font-size: 1.5rem;
    background: var(--gradient-3);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0.5rem 0 0 0;
}

.quiz-modal-body {
    padding: 0;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
}

.quiz-problem-panel {
    flex: 1.5;
    min-width: 0;
    padding: 2rem;
    background: var(--dark-bg);
    border-right: 1px solid var(--glass-border);
    overflow-y: auto;
}

.quiz-container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.quiz-progress-bar-container {
    height: 8px;
    background: var(--dark-card);
    border-radius: 4px;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.quiz-progress-bar {
    height: 100%;
    background: var(--gradient-1);
    width: 10%;
    transition: width 0.3s ease;
    border-radius: 4px;
}

.quiz-top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.quiz-timer-box,
.quiz-best-time-box {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);

    padding: 0.7rem 1rem;
    border-radius: 14px;

    display: flex;
    align-items: center;
    gap: 0.7rem;

    min-width: 150px;

    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.quiz-timer-box i,
.quiz-best-time-box i {
    color: var(--accent);
    font-size: 1rem;
}

.quiz-timer-content,
.quiz-best-time-content {
    display: flex;
    flex-direction: column;
}

.quiz-timer-label,
.quiz-best-time-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
}

.quiz-timer,
.quiz-best-time {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: "Orbitron", sans-serif;
}

.quiz-counter {
    color: var(--text-secondary);
    font-size: 0.9rem;

    padding: 0.7rem 1rem;

    background: var(--glass-bg);

    border-radius: 14px;

    border: 1px solid var(--glass-border);

    backdrop-filter: blur(10px);

    font-weight: 600;
}

.quiz-timer-box,
.quiz-best-time-box {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);

    padding: 0.7rem 1rem;
    border-radius: 14px;

    display: flex;
    align-items: center;
    gap: 0.7rem;

    min-width: 150px;

    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.quiz-timer-box i,
.quiz-best-time-box i {
    color: var(--accent);
    font-size: 1rem;
}

.quiz-timer-content,
.quiz-best-time-content {
    display: flex;
    flex-direction: column;
}

.timer-label,
.quiz-timer-label,
.quiz-best-time-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
}

.timer-value,
.quiz-timer,
.quiz-best-time {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: Orbitron, sans-serif;
}

.quiz-counter {
    color: var(--text-secondary);
    font-size: 0.9rem;

    padding: 0.7rem 1rem;

    background: var(--glass-bg);

    border-radius: 14px;

    border: 1px solid var(--glass-border);

    backdrop-filter: blur(10px);

    font-weight: 600;
}

.quiz-question {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
    line-height: 1.6;
    clear: both;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--dark-card);
    border: 2px solid var(--glass-border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.quiz-option:hover {
    border-color: var(--primary);
    background: rgba(124, 58, 237, 0.1);
    transform: translateX(5px);
}

.quiz-option.selected {
    border-color: var(--primary);
    background: rgba(124, 58, 237, 0.2);
}

.quiz-option.correct {
    border-color: #22c55e;
    background: rgba(34, 197, 94, 0.2);
}

.quiz-option.incorrect {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.2);
}

.option-letter {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--primary-light);
    flex-shrink: 0;
}

.quiz-option.correct .option-letter {
    background: #22c55e;
    color: white;
    border-color: #22c55e;
}

.quiz-option.incorrect .option-letter {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
}

.option-text {
    color: var(--text-primary);
    line-height: 1.5;
}

/* Quiz Info Panel */
.quiz-info-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 1.5rem;
    height: fit-content;
    position: sticky;
    top: 20px;
    margin: 1.5rem;
}

.quiz-info-panel h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.quiz-info-panel ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

.quiz-info-panel ul li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
    position: relative;
    padding-left: 1.5rem;
}

.quiz-info-panel ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent);
}


.quiz-xp-display {
    background: var(--gradient-4);
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
    font-weight: 600;
    color: var(--dark-bg);
    font-size: 1rem;
}

.quiz-xp-display i {
    margin-right: 0.5rem;
}

/* Quiz Result */
.quiz-result {
    text-align: center;
    padding: 2rem;
    width: 100%;
    color: white;
}

.quiz-result h3,
.quiz-result p,
.quiz-result span {
    color: white;
}

.quiz-result.hidden {
    display: none;
}

.quiz-result-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.quiz-result-icon {
    font-size: 4rem;
    animation: bounce 1s ease;
}

.quiz-result h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.quiz-score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 1rem 0;
}

.score-number {
    font-size: 3rem;
    font-weight: bold;
    color: #00d4ff;
}

.xp-gained {
    color: var(--accent);
    font-weight: 600;
    font-size: 1.1rem;
}

.quiz-time-result {
    color: var(--text-primary);
    font-size: 1rem;
    padding: 0.8rem 1.2rem;

    border-radius: 12px;

    background: rgba(255, 255, 255, 0.05);

    border: 1px solid var(--glass-border);

    backdrop-filter: blur(10px);
}

.quiz-time-result strong {
    color: var(--accent);
    font-family: "Orbitron", sans-serif;
}

.quiz-review-container {
    max-height: 70vh;
    overflow-y: auto;
    padding: 20px;
}

.review-item {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.review-question {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.review-answer,
.review-correct,
.review-explanation {
    margin: 8px 0;
    line-height: 1.6;
}

/* Profile Edit Modal */
.profile-edit-modal {
    max-width: 500px;
}

.profile-edit-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.avatar-selector h4,
.name-editor label {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--accent);
    display: block;
}

.avatar-options {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
}

.avatar-option {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 3px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.avatar-option:hover {
    border-color: var(--primary);
    transform: scale(1.1);
}

.avatar-option.selected {
    border-color: var(--accent);
    background: var(--gradient-1);
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.4);
}

.name-editor input {
    width: 100%;
    padding: 1rem;
    background: var(--dark-card);
    border: 2px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: "Poppins", sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.name-editor input:focus {
    outline: none;
    border-color: var(--accent);
}

.name-editor input::placeholder {
    color: var(--text-secondary);
}

/* Profile edit button */
.profile-edit-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-edit-btn:hover {
    background: var(--primary);
    color: white;
    transform: scale(1.05);
}

.profile-card {
    position: relative;
}

.profile-card:hover .profile-avatar {
    transform: scale(1.1) rotate(8deg);
}

/* ====== FOOTER QUESTIONS ====== */
.footer-questions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.footer-question {
    padding: 0.6rem 1rem;
    border-radius: 15px;
    background: var(--dark-surface);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.footer-question:hover {
    background: var(--primary);
    color: white;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .main-title {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1.3rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        flex-direction: row;
        gap: 0.5rem;
        flex-wrap: nowrap;
        overflow-x: visible;
    }

    .stat-box {
        flex: 1;
        min-width: 0;
        padding: 0.5rem;
    }

    .roadmap-stages {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .progress-bar {
        display: none;
    }

    .practice-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .search-bar {
        max-width: 100%;
    }

    .problems-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 1rem;
        text-align: center;
    }

    .chatbot-window {
        width: 300px;
        height: 450px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }

    .newsletter-form {
        justify-content: center;
    }

    .quiz-grid {
        grid-template-columns: 1fr;
    }

    .quiz-layout {
        flex-direction: column;
    }

    .quiz-editor-panel {
        order: -1;
    }

    .avatar-options {
        grid-template-columns: repeat(4, 1fr);
    }

    .profile-edit-modal .modal-content {
        width: 95%;
        margin: 1rem;
    }

    .quiz-top-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .quiz-timer-box,
    .quiz-best-time-box {
        width: 100%;
        min-width: 0;
    }

    .quiz-counter {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 4rem 1rem;
        scroll-margin-top: 64px;
    }

    section[id] {
        scroll-margin-top: 64px;
    }

    .navbar {
        padding: 1rem;
    }

    .logo-title {
        display: none;
    }

    .section-title {
        font-size: 2rem;
    }
}

/* ===== DARK/LIGHT MODE ===== */
body.light-mode {
    --dark-bg: #ffffff;
    --dark-surface: #f8fafc;
    --dark-card: #e2e8f0;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--dark-card);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-1);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-light);
}

/* ===== GLASSMORPHISM ===== */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 20px;
    padding: 0.8rem 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.output-info {
    color: var(--accent);
    padding: 1rem;
    border-left: 3px solid var(--accent);
    margin: 0.5rem 1rem;
}

.output-warning {
    color: #fbbf24;
    padding: 1rem;
    border-left: 3px solid #fbbf24;
    margin: 0.5rem 1rem;
}

.output-legend {
    display: flex;
    gap: 2rem;
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.output-legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.output-legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

.syntax-highlight {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 45px;
    right: 0;
    width: calc(100% - 45px);
    height: 100%;
    padding: 1rem 1.5rem;
    margin: 0;
    font-family: 'Fira Code', Consolas, Monaco, monospace;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: normal;
    word-spacing: normal;
    white-space: pre;
    pointer-events: none;
    overflow: hidden;
    color: var(--text-primary);
    z-index: 1;
    box-sizing: border-box;
    background: transparent;
}

.output-panel {
    background: var(--dark-surface);
    border-top: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
}

.output-panel.collapsed .output-content,
.output-panel.collapsed .test-cases-container {
    display: none;
}

.syntax-highlight .token.keyword {
    color: #c792ea;

}

.syntax-highlight .token.string {
    color: #c3e88d;
}

.syntax-highlight .token.number {
    color: #f78c6c;
}

.syntax-highlight .token.comment {
    color: #546e7a;

}

.syntax-highlight .token.operator {
    color: #89ddff;
}

.syntax-highlight .token.function {
    color: #82aaff;
}

.syntax-highlight-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* Editor line highlight */
.code-textarea:focus~.syntax-highlight {
    display: block;
}

/* Code completion dropdown */
.code-completion {
    position: absolute;
    bottom: 200px;
    left: 100px;
    width: 300px;
    background: var(--dark-surface);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    box-shadow: var(--glass-shadow);
    display: none;
    z-index: 10;
}

.code-completion.active {
    display: block;
}

.completion-item {
    padding: 0.8rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    transition: background 0.2s ease;
}

.completion-item:hover,
.completion-item.selected {
    background: rgba(124, 58, 237, 0.2);
}

.completion-type {
    font-size: 0.75rem;
    color: var(--accent);
    padding: 0.2rem 0.5rem;
    background: var(--glass-bg);
    border-radius: 4px;
}

.completion-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Editor minimap */
.editor-minimap {
    width: 80px;
    background: var(--dark-surface);
    border-left: 1px solid var(--glass-border);
    position: relative;
    overflow: hidden;
}

.minimap-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    font-size: 2px;
    line-height: 2px;
    color: var(--text-secondary);
    opacity: 0.6;
    white-space: pre;
    padding: 0.5rem;
}

/* Editor tabs */
.editor-tabs {
    display: flex;
    background: var(--dark-surface);
    border-bottom: 1px solid var(--glass-border);
    padding: 0 1rem;
}

.editor-tab {
    padding: 0.8rem 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.editor-tab.active {
    color: var(--text-primary);
    border-color: var(--accent);
    background: rgba(6, 182, 212, 0.1);
}

.editor-tab:hover {
    color: var(--text-primary);
}

.tab-close {
    opacity: 0;
    transition: opacity 0.2s ease;
    cursor: pointer;
}

.editor-tab:hover .tab-close {
    opacity: 1;
}

/* Status bar */
.status-bar {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 1.5rem;
    background: var(--primary);
    color: white;
    font-size: 0.8rem;
    position: relative;
    z-index: 5;
}

.status-left,
.status-right {
    display: flex;
    gap: 1.5rem;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    opacity: 0.9;
}

/* Matching brackets highlight */
.matching-bracket {
    background: rgba(124, 58, 237, 0.3);
    border-radius: 2px;
}

/* Code folding */
.fold-region {
    color: var(--text-secondary);
    cursor: pointer;
}

.fold-region:hover {
    color: var(--accent);
}

/* Terminal/Console output styling */
.console-output {
    padding: 1rem;
    font-family: "Fira Code", monospace;
}

.console-line {
    margin: 0.3rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.console-error {
    color: #ef4444;
}

.console-warning {
    color: #fbbf24;
}

.console-success {
    color: #22c55e;
}

.console-info {
    color: var(--accent);
}

.console-timestamp {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Test case results */
.test-case {
    padding: 1rem;
    margin: 0.5rem 0;
    background: var(--dark-card);
    border-radius: 8px;
    border-left: 3px solid var(--accent);
}

.test-case.passed {
    border-color: #22c55e;
}

.test-case.failed {
    border-color: #ef4444;
}

.test-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.test-result {
    font-family: "Fira Code", monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Code editor shortcuts panel */
.shortcuts-panel {
    position: absolute;
    bottom: 200px;
    right: 20px;
    background: var(--dark-surface);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 1rem;
    width: 250px;
    display: none;
    box-shadow: var(--glass-shadow);
    z-index: 20;
}

.shortcuts-panel.active {
    display: block;
}

.shortcuts-title {
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--accent);
}

.shortcuts-list {
    list-style: none;
}

.shortcuts-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.4rem 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.shortcut-key {
    background: var(--dark-card);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: monospace;
    color: var(--text-primary);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulseGlow {

    0%,
    100% {
        box-shadow: 0 0 5px rgba(124, 58, 237, 0.5);
    }

    50% {
        box-shadow: 0 0 20px rgba(124, 58, 237, 0.8);
    }
}

.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

.delay-4 {
    animation-delay: 0.4s;
}

.delay-5 {
    animation-delay: 0.5s;
}

/* ===== TOPIC OF THE DAY ===== */
.totd-section {
    padding: 2rem 0;
    scroll-margin-top: 72px;
}

.totd-card {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding: 2rem;
    margin: 2px;
    border-radius: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.totd-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-1);
}

.totd-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gradient-1);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    width: fit-content;
}

.totd-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.totd-icon {
    font-size: 3.5rem;
    flex-shrink: 0;
}

.totd-info {
    flex: 1;
}

.totd-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.totd-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0.8rem;
}

.totd-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.totd-problems {
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.3rem 0.8rem;
    border-radius: 999px;
}

.totd-btn {
    width: fit-content;
}

.totd-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-1);
}

.totd-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gradient-1);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    width: fit-content;
}

.totd-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.totd-icon {
    font-size: 3.5rem;
    flex-shrink: 0;
}

.totd-info {
    flex: 1;
}

.totd-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

.delay-4 {
    animation-delay: 0.4s;
}

.delay-5 {
    animation-delay: 0.5s;
}

.recommendation-card {
    margin-top: 15px;
    padding: 15px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
}

.recommendation-card h4 {
    margin-bottom: 8px;
}

.back-to-top {
    position: fixed;
    bottom: 105px;
    right: 40px;

    width: 40px;
    height: 40px;

    border: none;
    border-radius: 50%;

    background: #7c3aed;
    color: white;

    font-size: 18px;

    cursor: pointer;

    display: none;

    z-index: 1000;

    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.35);

    transition: all 0.3s ease;
}

.back-to-top:hover {
    transform: translateY(-4px);

    background: #8b5cf6;
}

.back-to-top.show {
    display: flex;

    align-items: center;

    justify-content: center;
}


.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

.delay-4 {
    animation-delay: 0.4s;
}

.delay-5 {
    animation-delay: 0.5s;
}

.hidden {
    display: none;
}

.quiz-loader {
    text-align: center;
    padding: 40px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #ddd;
    border-top: 5px solid #6c63ff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.quiz-problem-panel {
    display: block !important;
}




.quiz-card * {
    pointer-events: auto;
}

.section-title {
    pointer-events: none !important;
}


.quiz-grid,
.quiz-card,
.start-quiz-btn {
    position: relative;
    z-index: 9999;
    pointer-events: auto;
}

.quiz-card * {
    position: relative;
}

@media (max-width: 768px) {
    .totd-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .totd-icon {
        font-size: 2.5rem;
    }

    .totd-title {
        font-size: 1.4rem;
    }

    .totd-btn {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .dashboard-card {
        padding: 1.5rem;
    }
}

/* ===== GAME MODAL ===== */
.game-modal .game-modal-content {
    max-width: 700px;
    width: 95%;
    background: var(--dark-surface);
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    overflow: hidden;
}

.game-modal-header {
    padding: 1.5rem 2rem;
    background: var(--dark-card);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.game-modal-header h3 {
    font-size: 1.5rem;
    background: var(--gradient-3);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.game-modal-body {
    padding: 2rem;
    max-height: 80vh;
    overflow-y: auto;
}

.game-type-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.game-type-card {
    background: var(--dark-card);
    border: 2px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.game-type-card:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.game-type-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.game-type-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.game-type-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.game-xp-reward {
    background: var(--gradient-4);
    color: var(--dark-bg);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}


/*AUTH GATE MODAL*/
#authGateModal {
    z-index: 11000;
}

.auth-gate-modal-content {
    position: relative;
    max-width: 420px;
    width: 90%;
    margin: auto;
    padding: 2.5rem 2rem 2rem;
    background: linear-gradient(145deg,
            rgba(26, 26, 62, 0.98) 0%,
            rgba(37, 37, 80, 0.98) 100%);
    border: 1px solid rgba(124, 58, 237, 0.35);
    border-radius: 24px;
    box-shadow:
        0 25px 60px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(255, 255, 255, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
    text-align: center;
    animation: authGateSlideIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes authGateSlideIn {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.92);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Lock icon ring */
.auth-gate-icon {
    display: flex;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.auth-gate-lock-ring {
    width: 76px;
    height: 76px;
    border-radius: 50%;
    background: linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    position: relative;
    box-shadow:
        0 0 0 8px rgba(124, 58, 237, 0.15),
        0 0 0 16px rgba(124, 58, 237, 0.07);
    animation: authLockPulse 2.4s ease-in-out infinite;
}

@keyframes authLockPulse {

    0%,
    100% {
        box-shadow: 0 0 0 8px rgba(124, 58, 237, 0.15), 0 0 0 16px rgba(124, 58, 237, 0.07);
    }

    50% {
        box-shadow: 0 0 0 10px rgba(124, 58, 237, 0.22), 0 0 0 22px rgba(124, 58, 237, 0.10);
    }
}

.auth-gate-title {
    font-family: "Orbitron", sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #a78bfa, #67e8f9);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.auth-gate-subtitle {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

/* Perks list */
.auth-gate-perks {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-bottom: 1.75rem;
    text-align: left;
    padding: 1rem 1.25rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 14px;
}

.auth-gate-perk {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.auth-gate-perk i {
    width: 18px;
    text-align: center;
    color: var(--accent);
    font-size: 0.9rem;
    flex-shrink: 0;
}

/* Action buttons */
.auth-gate-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.auth-gate-btn {
    flex: 1;
    min-width: 130px;
    max-width: 180px;
    padding: 0.75rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.auth-gate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(124, 58, 237, 0.4);
}

/* Dismiss */
.auth-gate-dismiss {
    margin: 0;
}

.auth-gate-dismiss-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.82rem;
    cursor: pointer;
    padding: 0.3rem 0.5rem;
    border-radius: 6px;
    transition: color 0.2s ease;
    font-family: inherit;
}

.auth-gate-dismiss-btn:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

/* Shake animation for already-locked elements */
@keyframes authGateShake {

    0%,
    100% {
        transform: translateX(0);
    }

    20% {
        transform: translateX(-6px);
    }

    40% {
        transform: translateX(6px);
    }

    60% {
        transform: translateX(-4px);
    }

    80% {
        transform: translateX(4px);
    }
}

.auth-gate-shake {
    animation: authGateShake 0.4s ease;
}

.game-stats-bar {
    display: flex;
    justify-content: space-around;
    background: var(--dark-card);
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.game-stat {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.game-stat span {
    color: var(--accent);
}

.game-question-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    padding: 1rem;
    background: var(--dark-card);
    border-radius: 12px;
    border-left: 4px solid var(--accent);
}

.game-options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.game-option {
    padding: 1rem;
    background: var(--dark-card);
    border: 2px solid var(--glass-border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.95rem;
    color: var(--text-primary);
    text-align: center;
}

.game-option:hover {
    border-color: var(--accent);
    background: rgba(108, 99, 255, 0.1);
}

.game-option.correct {
    border-color: #22c55e;
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.game-option.wrong {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.game-explanation {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(108, 99, 255, 0.1);
    border-radius: 12px;
    border-left: 4px solid var(--primary);
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.game-results-content {
    text-align: center;
    padding: 2rem;
}

.game-results-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.game-results-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin: 2rem 0;
}

.result-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.result-stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-3);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.result-stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.3rem;
}

.game-results-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1rem;
}

/* Badge locked state for gamification */
.badge-lg.locked {
    opacity: 0.4;
    filter: grayscale(100%);
}

.badge-lg:hover .badge-tooltip,
.badge-lg:focus .badge-tooltip {
    opacity: 1;
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}