/* ═══════════════════════════════════════════════════════════════
   QUICK NOTES — Algorithm Visualizer Inline Notes Widget
   ═══════════════════════════════════════════════════════════════
   Dark theme matching the app's #0a0a1a aesthetic with warm
   undertones (no purple, cyan, or lime).
   Positioned above the scroll-to-top button at bottom-right.
   ═══════════════════════════════════════════════════════════════ */

/* ─── Container ─── */
.quick-note-container {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ─── Toggle Button (sticky-note icon) ─── */
.quick-note-toggle {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #1A1625;
  border: 1.5px solid #3A2E3E;
  color: #8A7D72;
  cursor: pointer;
  box-shadow:
    0 2px 8px rgba(0, 0, 0, 0.30),
    0 4px 16px rgba(0, 0, 0, 0.15);
  transition:
    background 0.25s ease,
    border-color 0.25s ease,
    color 0.25s ease,
    transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 0.25s ease;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.quick-note-toggle:hover {
  background: #262133;
  border-color: #D4A574;
  color: #E8DCC8;
  transform: scale(1.08);
  box-shadow:
    0 4px 16px rgba(212, 165, 116, 0.12),
    0 6px 24px rgba(0, 0, 0, 0.20);
}

.quick-note-toggle:active {
  transform: scale(0.94);
  transition-duration: 0.12s;
}

.quick-note-toggle.is-active {
  background: #262133;
  border-color: #D4A574;
  color: #E8DCC8;
  box-shadow:
    0 0 0 3px rgba(212, 165, 116, 0.10),
    0 2px 8px rgba(0, 0, 0, 0.30);
}

.quick-note-toggle:focus-visible {
  outline: 2px solid #D4A574 !important;
  outline-offset: 3px !important;
  box-shadow: none !important;
}

.quick-note-toggle svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke 0.25s ease;
}

/* ─── Note count badge ─── */
.quick-note-badge {
  position: absolute;
  top: -3px;
  right: -3px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: #D4A574;
  color: #1A1625;
  font-size: 0.58rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.5);
  transition:
    opacity 0.3s ease,
    transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}

.quick-note-badge.visible {
  opacity: 1;
  transform: scale(1);
}

/* ─── Panel ─── */
.quick-note-panel {
  position: absolute;
  bottom: calc(100% + 12px);
  right: 0;
  width: 340px;
  max-height: 0;
  overflow: hidden;
  border-radius: 14px;
  background: #1A1625;
  border: 1px solid #3A2E3E;
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.45),
    0 2px 8px rgba(0, 0, 0, 0.25);
  transition:
    max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.3s ease,
    transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0;
  transform: translateY(8px) scale(0.97);
  transform-origin: bottom right;
}

.quick-note-panel.open {
  max-height: 380px;
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ─── Panel Header ─── */
.quick-note-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1rem 0.6rem;
  border-bottom: 1px solid #2F2835;
}

.quick-note-title-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.quick-note-title-icon {
  width: 18px;
  height: 18px;
  color: #D4A574;
  flex-shrink: 0;
}

.quick-note-title-icon path:first-child {
  fill: #2F2835;
  stroke: #D4A574;
}

.quick-note-title-icon polyline {
  stroke: #D4A574;
}

.quick-note-title {
  font-family: 'Inter', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  color: #E8DCC8;
  letter-spacing: -0.01em;
}

.quick-note-close {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: #6B5F57;
  cursor: pointer;
  font-size: 1.1rem;
  transition:
    background 0.2s ease,
    color 0.2s ease;
}

.quick-note-close:hover {
  background: rgba(212, 165, 116, 0.10);
  color: #E8DCC8;
}

.quick-note-close:focus-visible {
  outline: 2px solid #D4A574 !important;
  outline-offset: 1px !important;
  box-shadow: none !important;
}

/* ─── Textarea ─── */
.quick-note-textarea {
  width: 100%;
  min-height: 160px;
  max-height: 220px;
  padding: 0.85rem 1rem;
  border: none;
  background: transparent;
  color: #E8DCC8;
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  line-height: 1.6;
  resize: none;
  outline: none;
  box-sizing: border-box;
  caret-color: #D4A574;
}

.quick-note-textarea::placeholder {
  color: #5A4F48;
  font-style: italic;
  font-size: 0.82rem;
}

.quick-note-textarea:focus {
  background: rgba(38, 33, 51, 0.5);
}

.quick-note-textarea:focus-visible {
  outline: 2px solid #D4A574 !important;
  outline-offset: -2px !important;
  box-shadow: none !important;
}

/* ─── Footer ─── */
.quick-note-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 1rem 0.65rem;
  border-top: 1px solid #2F2835;
}

.quick-note-status {
  font-size: 0.7rem;
  color: #6B5F57;
  transition: color 0.3s ease;
  display: flex;
  align-items: center;
  gap: 4px;
}

.quick-note-status.saving {
  color: #6B5F57;
}

.quick-note-status.saved {
  color: #7CB89A;
}

.quick-note-status .dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.7;
}

.quick-note-char-count {
  font-size: 0.65rem;
  color: #4A423C;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ─── Clear button ─── */
.quick-note-clear {
  background: none;
  border: none;
  color: #4A423C;
  font-size: 0.7rem;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 6px;
  transition:
    background 0.2s ease,
    color 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.quick-note-clear:focus-visible {
  outline: 2px solid #D4A574 !important;
  outline-offset: 2px !important;
  box-shadow: none !important;
}

.quick-note-clear:hover {
  background: rgba(232, 106, 106, 0.10);
  color: #E86A6A;
}

/* ─── Enter animation for the whole widget ─── */
.quick-note-container {
  animation: quickNoteFadeIn 0.4s ease both;
}

@keyframes quickNoteFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Mobile ─── */
@media (max-width: 600px) {
  .quick-note-container {
    bottom: 30px;
    right: 24px;
  }

  .quick-note-panel {
    width: calc(100vw - 28px);
    max-width: 340px;
    right: 0;
  }

  .quick-note-toggle {
    width: 40px;
    height: 40px;
  }

  .quick-note-toggle svg {
    width: 20px;
    height: 20px;
  }
}

/* ─── Reduced motion ─── */
@media (prefers-reduced-motion: reduce) {
  .quick-note-toggle,
  .quick-note-panel,
  .quick-note-container {
    transition: none;
    animation: none;
  }
}