/* ─────────────────────────────────────────────
   Python Learning Page – Reusable Component Styles
   ───────────────────────────────────────────── */

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

/* ── Topic Navigation Sidebar ── */
.py-layout {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

.py-sidebar {
  position: sticky;
  top: 100px;
  width: 240px;
  flex-shrink: 0;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 1.25rem 0;
  backdrop-filter: blur(10px);
}

.py-sidebar-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  padding: 0 1.25rem 0.75rem;
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 0.5rem;
}

.py-sidebar-nav {
  list-style: none;
  padding: 0;
  margin: 0;
}

.py-sidebar-nav li a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 1.25rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
}

.py-sidebar-nav li a:hover,
.py-sidebar-nav li a.active {
  color: var(--primary-light);
  background: rgba(124, 58, 237, 0.08);
  border-left-color: var(--primary);
}

.py-sidebar-nav li a .nav-icon {
  width: 20px;
  text-align: center;
  font-size: 0.9rem;
}

.py-main-content {
  flex: 1;
  min-width: 0;
}

/* ── Lesson Section Card ── */
.py-lesson {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 2.5rem;
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
  transition: border-color 0.3s ease;
}

.py-lesson:target {
  border-color: var(--primary);
}

.py-lesson-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.py-lesson-number {
  font-family: "Orbitron", sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  flex-shrink: 0;
}

.py-lesson-header h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.py-lesson p,
.py-lesson li {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 0.75rem;
}

.py-lesson ul,
.py-lesson ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.py-lesson li {
  margin-bottom: 0.4rem;
}

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

/* ── Concept Card (inline sub-card) ── */
.py-concept-card {
  background: var(--dark-surface);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin: 1rem 0;
}

.py-concept-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

.py-concept-card p {
  margin-bottom: 0;
}

/* ── Syntax-highlighted Code Block ── */
.py-code-block {
  position: relative;
  margin: 1rem 0 1.5rem;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--glass-border);
}

.py-code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(0, 0, 0, 0.3);
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--glass-border);
}

.py-code-lang {
  font-family: "Fira Code", monospace;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.py-code-copy {
  background: none;
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  cursor: pointer;
  font-family: "Poppins", sans-serif;
  transition: all 0.2s ease;
}

.py-code-copy:hover {
  color: var(--text-primary);
  border-color: var(--primary-light);
}

.py-code-copy.copied {
  color: #22c55e;
  border-color: #22c55e;
}

.py-code-block pre {
  margin: 0;
  padding: 1.25rem 1.5rem;
  background: #0d1117;
  overflow-x: auto;
}

.py-code-block code {
  font-family: "Fira Code", Consolas, Monaco, monospace;
  font-size: 0.85rem;
  line-height: 1.7;
  color: #e6edf3;
}

/* Token colors – consistent with existing project */
.py-code-block .tok-kw { color: #c792ea; }
.py-code-block .tok-fn { color: #82aaff; }
.py-code-block .tok-str { color: #c3e88d; }
.py-code-block .tok-num { color: #f78c6c; }
.py-code-block .tok-cmt { color: #546e7a; font-style: italic; }
.py-code-block .tok-op { color: #89ddff; }
.py-code-block .tok-bi { color: #ffcb6b; }
.py-code-block .tok-var { color: #f07178; }
.py-code-block .tok-bool { color: #ff5370; }
.py-code-block .tok-param { color: #e6edf3; }

/* ── Exercise Box ── */
.py-exercise {
  background: rgba(34, 197, 94, 0.06);
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: 12px;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.py-exercise-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: #22c55e;
  margin-bottom: 0.75rem;
}

.py-exercise-title i {
  font-size: 1.1rem;
}

.py-exercise ol,
.py-exercise ul {
  margin-bottom: 0.75rem;
}

.py-exercise-toggle {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #22c55e;
  font-family: "Poppins", sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.4rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.py-exercise-toggle:hover {
  background: rgba(34, 197, 94, 0.25);
}

.py-exercise-solution {
  display: none;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(34, 197, 94, 0.2);
}

.py-exercise-solution.visible {
  display: block;
}

.py-exercise-solution p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

/* ── Output / Result Block ── */
.py-output {
  background: rgba(6, 182, 212, 0.06);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin: 0.75rem 0 1.25rem;
}

.py-output-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.py-output pre {
  margin: 0;
  font-family: "Fira Code", monospace;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ── Progress Tracker (topic-level) ── */
.py-progress-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 2rem 0;
  padding: 1.25rem 1.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  backdrop-filter: blur(10px);
}

.py-progress-track {
  flex: 1;
  height: 8px;
  background: var(--dark-surface);
  border-radius: 99px;
  overflow: hidden;
}

.py-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--gradient-4);
  border-radius: 99px;
  transition: width 0.5s ease;
}

.py-progress-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
}

/* ── Key Takeaway / Tip Callout ── */
.py-callout {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: rgba(124, 58, 237, 0.06);
  border: 1px solid rgba(124, 58, 237, 0.25);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin: 1.25rem 0;
}

.py-callout-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  line-height: 1.4;
}

.py-callout p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ── Table (for data types, etc.) ── */
.py-table-wrap {
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
}

.py-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.py-table th {
  background: rgba(124, 58, 237, 0.15);
  color: var(--primary-light);
  font-weight: 600;
  text-align: left;
  padding: 0.75rem 1rem;
  white-space: nowrap;
}

.py-table td {
  padding: 0.65rem 1rem;
  border-top: 1px solid var(--glass-border);
  color: var(--text-secondary);
}

.py-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .py-sidebar {
    display: none;
  }
}

@media (max-width: 768px) {
  .py-lesson {
    padding: 1.5rem;
  }

  .py-lesson-header h3 {
    font-size: 1.15rem;
  }

  .py-code-block pre {
    padding: 1rem;
  }

  .py-code-block code {
    font-size: 0.78rem;
  }

  .py-progress-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }

  .py-progress-text {
    text-align: center;
  }

  .py-callout {
    flex-direction: column;
    gap: 0.5rem;
  }
}

@media (max-width: 480px) {
  .py-lesson {
    padding: 1.25rem;
    border-radius: 12px;
  }

  .py-lesson-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .py-exercise {
    padding: 1rem;
  }
}

/* ── Accessibility: focus-visible ── */
.py-sidebar-nav li a:focus-visible,
.py-code-copy:focus-visible,
.py-exercise-toggle:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ── Print styles ── */
@media print {
  .py-sidebar,
  .py-progress-bar,
  .py-exercise-toggle,
  .py-code-copy,
  .navbar,
  .footer {
    display: none !important;
  }

  .py-lesson {
    break-inside: avoid;
    border: 1px solid #ccc;
  }

  .py-code-block pre {
    background: #f5f5f5;
    color: #333;
  }
}