/* Card Stack Preview - Figma-inspired smooth animations */
/* With Anki Card Styling - Light/Dark Mode Support */

/* ============================================================
   PREVIEW PANEL & CONTAINER
   ============================================================ */

/* Container for the entire preview area */
#previewPanel {
  position: relative;
  min-height: 600px;
  background: var(--card-stack-bg, #1c2128);
  overflow: hidden;
  transition: background-color 0.3s ease;
}

[data-theme="light"] #previewPanel {
  background: #f3f4f6;
}

[data-theme="dark"] #previewPanel {
  background: #1c2128;
}

/* Card stack container (centered viewport) */
.card-stack-container {
  position: relative;
  width: 100%;
  height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

/* The actual stack holder */
.card-stack {
  position: relative;
  width: 320px;
  height: 480px;
  perspective: 400px;
  transform-style: preserve-3d;
}

/* ============================================================
   PREVIEW CARD BASE - Matches Anki Card Styling
   ============================================================ */

/* Individual preview card - Figma style animations */
.preview-card {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  /* Light Mode Default */
  background: #FFFFFF;
  border-radius: 16px;
  box-shadow:
    0px 35px 14px rgba(0, 0, 0, 0.01),
    0px 20px 12px rgba(0, 0, 0, 0.05),
    0px 9px 9px rgba(0, 0, 0, 0.09),
    0px 2px 5px rgba(0, 0, 0, 0.1);
  cursor: grab;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
  overflow: hidden;
  will-change: transform, opacity;
  border: 1px solid #E5E7EB;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Dark Mode Card */
[data-theme="dark"] .preview-card {
  background: #111827;
  border-color: #374151;
  box-shadow:
    0px 35px 14px rgba(0, 0, 0, 0.05),
    0px 20px 12px rgba(0, 0, 0, 0.15),
    0px 9px 9px rgba(0, 0, 0, 0.2),
    0px 2px 5px rgba(0, 0, 0, 0.25);
}

.preview-card:active {
  cursor: grabbing;
}

/* 
 * Card Stack Animation System (Figma-inspired)
 * Spring transitions for smooth card movements
 */

/* When not dragging, apply smooth spring transitions */
.preview-card:not(.dragging) {
  transition: 
    transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1),
    opacity 0.3s ease-out;
  /* z-index transition delayed to avoid visual stacking issues */
  transition-property: transform, opacity, z-index;
  transition-duration: 0.5s, 0.3s, 0s;
  transition-timing-function: cubic-bezier(0.34, 1.56, 0.64, 1), ease-out, linear;
  transition-delay: 0s, 0s, 0.05s;
}

/* When dragging, disable transitions for immediate response */
.preview-card.dragging {
  transition: none !important;
  cursor: grabbing;
}

/* Card positions in stack (0=front, 3=back) - Figma values */
.preview-card[data-position="0"] {
  z-index: 4;
  transform: translateX(0px) translateY(0px) scale(1) rotate(0deg);
  opacity: 1;
}

.preview-card[data-position="1"] {
  z-index: 3;
  transform: translateX(32px) translateY(-12px) scale(0.9) rotate(2deg);
  opacity: 1;
  pointer-events: none;
}

.preview-card[data-position="2"] {
  z-index: 2;
  transform: translateX(48px) translateY(0px) scale(0.85) rotate(4deg);
  opacity: 1;
  pointer-events: none;
}

.preview-card[data-position="3"] {
  z-index: 1;
  transform: translateX(62px) translateY(12px) scale(0.8) rotate(7deg);
  opacity: 0.85;
  pointer-events: none;
}

/* Card going to back of stack - smooth transition */
.preview-card.to-back {
  z-index: 0 !important;
  transition: 
    transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
    opacity 0.3s ease-out !important;
}

/* Card animating to the right (next button) */
.preview-card.swipe-right {
  z-index: 5 !important;
  transition: 
    transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    opacity 0.3s ease-out !important;
}

/* Card coming from back to front (prev button) */
.preview-card.from-back {
  z-index: 5 !important;
  transition: 
    transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
    opacity 0.3s ease-out !important;
}

/* Cards moving backward in stack (prev button - others shift back) */
.preview-card.shift-back {
  transition: 
    transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
    opacity 0.3s ease-out !important;
}

/* ============================================================
   CARD FACE LAYOUT - Front/Back Split with Divider
   ============================================================ */

/* Card content layout - Front and Back split */
.card-face-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.card-half {
  flex: 1;
  position: relative;
  padding: 16px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Front/Back Divider Line - Dark themed */
.card-half.front {
  border-bottom: 2px solid #D1D5DB;
}

[data-theme="dark"] .card-half.front {
  border-bottom-color: #374151;
}

.card-half:last-child {
  border-bottom: none;
}

/* Light Mode Card Faces */
.card-half.front {
  background: #FFFFFF;
  color: #1F2937;
  border-radius: 16px 16px 0 0;
}

.card-half.back {
  background: #FFFFFF;
  color: #1F2937;
  border-radius: 0 0 16px 16px;
}

/* Dark Mode Card Faces */
[data-theme="dark"] .card-half.front {
  background: #111827;
  color: #E5E7EB;
}

[data-theme="dark"] .card-half.back {
  background: #111827;
  color: #E5E7EB;
}

/* Card Labels (FRONT/BACK) */
.card-half-label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin-bottom: 10px;
  opacity: 0.6;
  color: #6B7280;
}

[data-theme="dark"] .card-half-label {
  color: #9CA3AF;
}

/* Card Content Area */
.card-half-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  font-size: 14px;
  line-height: 1.6;
  position: relative;
  
  /* Custom scrollbar */
  scrollbar-width: thin;
  scrollbar-color: rgba(107, 114, 128, 0.4) transparent;
}

[data-theme="dark"] .card-half-content {
  scrollbar-color: rgba(156, 163, 175, 0.3) transparent;
}

.card-half-content::-webkit-scrollbar {
  width: 5px;
}

.card-half-content::-webkit-scrollbar-track {
  background: transparent;
}

.card-half-content::-webkit-scrollbar-thumb {
  background: rgba(107, 114, 128, 0.4);
  border-radius: 3px;
}

[data-theme="dark"] .card-half-content::-webkit-scrollbar-thumb {
  background: rgba(156, 163, 175, 0.3);
}

/* ============================================================
   ANKI CARD CONTENT STYLING - Light Mode (Default)
   ============================================================ */

/* MathJax / LaTeX */
.card-half-content .mjx-container,
.card-half-content .MathJax,
.card-half-content mjx-container {
  overflow-x: auto;
  overflow-y: hidden;
  margin: 6px 0;
  font-size: 1em !important;
}

/* Inline Code */
.card-half-content code {
  font-family: 'SF Mono', 'Consolas', 'Monaco', 'Menlo', monospace;
  background-color: #F3F4F6;
  padding: 2px 5px;
  border-radius: 3px;
  font-size: 0.85em;
  color: #1F2937;
}

[data-theme="dark"] .card-half-content code {
  background-color: #374151;
  color: #E5E7EB;
}

/* Code Blocks (pre) */
.card-half-content pre {
  background-color: #1F2937;
  color: #E5E7EB;
  padding: 12px 14px;
  border-radius: 6px;
  overflow-x: auto;
  margin: 10px 0;
  font-family: 'SF Mono', 'Consolas', 'Monaco', 'Menlo', monospace;
  font-size: 0.8em;
  line-height: 1.5;
}

[data-theme="dark"] .card-half-content pre {
  background-color: #0F172A;
}

.card-half-content pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
}

/* Strong & Emphasis */
.card-half-content strong,
.card-half-content b {
  font-weight: 600;
  color: #111827;
}

[data-theme="dark"] .card-half-content strong,
[data-theme="dark"] .card-half-content b {
  color: #F9FAFB;
}

.card-half-content em,
.card-half-content i {
  font-style: italic;
}

/* Lists */
.card-half-content ul,
.card-half-content ol {
  margin: 10px 0;
  padding-left: 18px;
}

.card-half-content li {
  margin: 4px 0;
  line-height: 1.5;
}

/* Headings */
.card-half-content h1,
.card-half-content h2,
.card-half-content h3,
.card-half-content h4,
.card-half-content h5,
.card-half-content h6 {
  margin: 12px 0 8px 0;
  color: #111827;
  line-height: 1.3;
  font-weight: 600;
}

.card-half-content h1 { font-size: 1.3em; }
.card-half-content h2 { font-size: 1.2em; }
.card-half-content h3 { font-size: 1.1em; }
.card-half-content h4 { font-size: 1em; }

[data-theme="dark"] .card-half-content h1,
[data-theme="dark"] .card-half-content h2,
[data-theme="dark"] .card-half-content h3,
[data-theme="dark"] .card-half-content h4,
[data-theme="dark"] .card-half-content h5,
[data-theme="dark"] .card-half-content h6 {
  color: #F3F4F6;
}

/* Links */
.card-half-content a {
  color: #2563EB;
  text-decoration: none;
}

.card-half-content a:hover {
  text-decoration: underline;
  color: #1D4ED8;
}

[data-theme="dark"] .card-half-content a {
  color: #60A5FA;
}

[data-theme="dark"] .card-half-content a:hover {
  color: #93C5FD;
}

/* ============================================================
   TABLE STYLING
   ============================================================ */

.card-half-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  background: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 6px;
  overflow: hidden;
  font-size: 0.85em;
}

[data-theme="dark"] .card-half-content table {
  background: #1F2937;
  border-color: #374151;
}

.card-half-content th {
  background-color: #F3F4F6;
  color: #374151;
  padding: 8px 10px;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid #E5E7EB;
}

[data-theme="dark"] .card-half-content th {
  background-color: #374151;
  color: #F9FAFB;
  border-bottom-color: #4B5563;
}

.card-half-content td {
  padding: 6px 10px;
  border-bottom: 1px solid #E5E7EB;
  vertical-align: top;
  background-color: #FFFFFF;
}

[data-theme="dark"] .card-half-content td {
  border-bottom-color: #374151;
  background-color: #1F2937;
}

.card-half-content tr:last-child td {
  border-bottom: none;
}

.card-half-content tr:nth-child(even) td {
  background-color: #F9FAFB;
}

[data-theme="dark"] .card-half-content tr:nth-child(even) td {
  background-color: #263244;
}

/* Table alignment */
.card-half-content th.text-center,
.card-half-content td.text-center,
.card-half-content th[align="center"],
.card-half-content td[align="center"] {
  text-align: center;
}

.card-half-content th.text-right,
.card-half-content td.text-right,
.card-half-content th[align="right"],
.card-half-content td[align="right"] {
  text-align: right;
}

/* ============================================================
   CALLOUT BOXES
   ============================================================ */

.card-half-content .callout,
.card-half-content .info,
.card-half-content .warning,
.card-half-content .tip,
.card-half-content .error {
  padding: 10px 12px;
  border-radius: 6px;
  margin: 10px 0;
  border-left: 3px solid;
  font-size: 0.9em;
}

.card-half-content .callout-info,
.card-half-content .info {
  background-color: rgba(59, 130, 246, 0.08);
  border-left-color: #3B82F6;
  color: #1F2937;
}

[data-theme="dark"] .card-half-content .callout-info,
[data-theme="dark"] .card-half-content .info {
  background-color: rgba(96, 165, 250, 0.1);
  border-left-color: #60A5FA;
  color: #E5E7EB;
}

.card-half-content .callout-warning,
.card-half-content .warning {
  background-color: rgba(251, 191, 36, 0.1);
  border-left-color: #F59E0B;
  color: #1F2937;
}

[data-theme="dark"] .card-half-content .callout-warning,
[data-theme="dark"] .card-half-content .warning {
  background-color: rgba(251, 191, 36, 0.1);
  color: #E5E7EB;
}

.card-half-content .callout-tip,
.card-half-content .tip {
  background-color: rgba(16, 185, 129, 0.1);
  border-left-color: #10B981;
  color: #1F2937;
}

[data-theme="dark"] .card-half-content .callout-tip,
[data-theme="dark"] .card-half-content .tip {
  background-color: rgba(52, 211, 153, 0.1);
  color: #E5E7EB;
}

.card-half-content .callout-error,
.card-half-content .error {
  background-color: rgba(239, 68, 68, 0.1);
  border-left-color: #EF4444;
  color: #1F2937;
}

[data-theme="dark"] .card-half-content .callout-error,
[data-theme="dark"] .card-half-content .error {
  background-color: rgba(248, 113, 113, 0.1);
  color: #E5E7EB;
}

.card-half-content .callout strong,
.card-half-content .info strong,
.card-half-content .warning strong,
.card-half-content .tip strong,
.card-half-content .error strong {
  display: block;
  margin-bottom: 4px;
  color: inherit;
}

/* ============================================================
   SPOILER / REVEAL STYLING
   The actual hint text is hidden until clicked/hovered
   ============================================================ */

.card-half-content .spoiler {
  background-color: #E5E7EB;
  color: transparent;
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-block;
  user-select: none;
  border: 1px dashed #9CA3AF;
  position: relative;
  min-width: 80px;
  text-align: center;
}

/* Show "Click to reveal" placeholder when hidden */
.card-half-content .spoiler::before {
  content: "👁 Reveal";
  color: #6B7280;
  font-size: 0.85em;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  transition: opacity 0.3s ease;
}

/* Hide placeholder and show content when revealed */
.card-half-content .spoiler:hover::before,
.card-half-content .spoiler.revealed::before {
  opacity: 0;
  pointer-events: none;
}

.card-half-content .spoiler:hover,
.card-half-content .spoiler.revealed {
  background-color: #F3F4F6;
  color: #1F2937;
  border-color: #6B7280;
  border-style: solid;
}

/* Dark mode spoiler */
[data-theme="dark"] .card-half-content .spoiler {
  background-color: #374151;
  border-color: #4B5563;
}

[data-theme="dark"] .card-half-content .spoiler::before {
  color: #9CA3AF;
}

[data-theme="dark"] .card-half-content .spoiler:hover,
[data-theme="dark"] .card-half-content .spoiler.revealed {
  background-color: #4B5563;
  border-color: #6B7280;
  color: #E5E7EB;
}

/* Details/Summary spoiler (click-to-expand) */
.card-half-content details.spoiler-block {
  background-color: #F3F4F6;
  border: 1px solid #E5E7EB;
  border-radius: 6px;
  margin: 10px 0;
  overflow: hidden;
}

[data-theme="dark"] .card-half-content details.spoiler-block {
  background-color: #1F2937;
  border-color: #374151;
}

.card-half-content details.spoiler-block summary {
  padding: 8px 12px;
  cursor: pointer;
  font-weight: 500;
  color: #374151;
  background-color: #F9FAFB;
  border-bottom: 1px solid #E5E7EB;
  user-select: none;
  list-style: none;
  font-size: 0.9em;
}

[data-theme="dark"] .card-half-content details.spoiler-block summary {
  background-color: #263244;
  border-bottom-color: #374151;
  color: #E5E7EB;
}

.card-half-content details.spoiler-block summary::-webkit-details-marker {
  display: none;
}

.card-half-content details.spoiler-block summary::before {
  content: "▶ ";
  display: inline-block;
  transition: transform 0.2s ease;
}

.card-half-content details.spoiler-block[open] summary::before {
  transform: rotate(90deg);
}

.card-half-content details.spoiler-block > *:not(summary) {
  padding: 10px 12px;
}

/* ============================================================
   BADGES / TAGS
   ============================================================ */

.card-half-content .badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.75em;
  font-weight: 500;
  margin: 2px 3px 2px 0;
  vertical-align: middle;
}

/* Light Mode Badges */
.card-half-content .badge-cyan,
.card-half-content .badge-primary {
  background-color: rgba(0, 229, 255, 0.15);
  color: #0891B2;
}

.card-half-content .badge-blue {
  background-color: rgba(59, 130, 246, 0.15);
  color: #2563EB;
}

.card-half-content .badge-green,
.card-half-content .badge-success {
  background-color: rgba(16, 185, 129, 0.15);
  color: #059669;
}

.card-half-content .badge-amber,
.card-half-content .badge-warning {
  background-color: rgba(251, 191, 36, 0.15);
  color: #D97706;
}

.card-half-content .badge-red,
.card-half-content .badge-error {
  background-color: rgba(239, 68, 68, 0.15);
  color: #DC2626;
}

.card-half-content .badge-purple {
  background-color: rgba(139, 92, 246, 0.15);
  color: #7C3AED;
}

.card-half-content .badge-gray {
  background-color: rgba(107, 114, 128, 0.15);
  color: #4B5563;
}

/* Dark Mode Badges */
[data-theme="dark"] .card-half-content .badge-cyan,
[data-theme="dark"] .card-half-content .badge-primary {
  background-color: rgba(34, 211, 238, 0.2);
  color: #67E8F9;
}

[data-theme="dark"] .card-half-content .badge-blue {
  background-color: rgba(96, 165, 250, 0.2);
  color: #93C5FD;
}

[data-theme="dark"] .card-half-content .badge-green,
[data-theme="dark"] .card-half-content .badge-success {
  background-color: rgba(52, 211, 153, 0.2);
  color: #6EE7B7;
}

[data-theme="dark"] .card-half-content .badge-amber,
[data-theme="dark"] .card-half-content .badge-warning {
  background-color: rgba(251, 191, 36, 0.2);
  color: #FCD34D;
}

[data-theme="dark"] .card-half-content .badge-red,
[data-theme="dark"] .card-half-content .badge-error {
  background-color: rgba(248, 113, 113, 0.2);
  color: #FCA5A5;
}

[data-theme="dark"] .card-half-content .badge-purple {
  background-color: rgba(167, 139, 250, 0.2);
  color: #C4B5FD;
}

[data-theme="dark"] .card-half-content .badge-gray {
  background-color: rgba(156, 163, 175, 0.2);
  color: #D1D5DB;
}

/* ============================================================
   KEYBOARD KEYS
   ============================================================ */

.card-half-content kbd {
  display: inline-block;
  padding: 2px 6px;
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.8em;
  color: #374151;
  background: linear-gradient(180deg, #FFFFFF 0%, #F3F4F6 100%);
  border: 1px solid #D1D5DB;
  border-radius: 4px;
  box-shadow: 0 2px 0 #D1D5DB;
  margin: 0 2px;
  vertical-align: middle;
}

[data-theme="dark"] .card-half-content kbd {
  background: linear-gradient(180deg, #374151 0%, #1F2937 100%);
  color: #E5E7EB;
  border-color: #4B5563;
  box-shadow: 0 2px 0 #374151;
}

/* ============================================================
   BLOCKQUOTE
   ============================================================ */

.card-half-content blockquote {
  border-left: 3px solid #D1D5DB;
  margin: 10px 0;
  padding: 8px 14px;
  background-color: #F9FAFB;
  border-radius: 0 6px 6px 0;
  color: #4B5563;
  font-style: italic;
  font-size: 0.9em;
}

[data-theme="dark"] .card-half-content blockquote {
  background-color: #1F2937;
  border-left-color: #4B5563;
  color: #9CA3AF;
}

.card-half-content blockquote cite {
  display: block;
  margin-top: 6px;
  font-size: 0.85em;
  color: #6B7280;
  font-style: normal;
}

/* ============================================================
   HIGHLIGHT / MARK
   ============================================================ */

.card-half-content mark,
.card-half-content .highlight {
  background-color: rgba(251, 191, 36, 0.35);
  padding: 1px 4px;
  border-radius: 3px;
  color: inherit;
}

.card-half-content .highlight-yellow {
  background-color: rgba(251, 191, 36, 0.35);
}

.card-half-content .highlight-green {
  background-color: rgba(16, 185, 129, 0.3);
}

.card-half-content .highlight-red {
  background-color: rgba(239, 68, 68, 0.2);
}

.card-half-content .highlight-cyan {
  background-color: rgba(0, 229, 255, 0.25);
}

[data-theme="dark"] .card-half-content mark,
[data-theme="dark"] .card-half-content .highlight {
  background-color: rgba(251, 191, 36, 0.3);
}

[data-theme="dark"] .card-half-content .highlight-yellow {
  background-color: rgba(251, 191, 36, 0.3);
}

[data-theme="dark"] .card-half-content .highlight-green {
  background-color: rgba(52, 211, 153, 0.25);
}

[data-theme="dark"] .card-half-content .highlight-cyan {
  background-color: rgba(34, 211, 238, 0.25);
}

[data-theme="dark"] .card-half-content .highlight-red {
  background-color: rgba(248, 113, 113, 0.2);
}

/* ============================================================
   COMPARISON (YES/NO, CHECK/CROSS)
   ============================================================ */

.card-half-content .yes,
.card-half-content .check {
  color: #10B981;
  font-weight: bold;
}

.card-half-content .no,
.card-half-content .cross {
  color: #EF4444;
  font-weight: bold;
}

/* ============================================================
   CLOZE DELETIONS
   ============================================================ */

.card-half-content .cloze {
  font-weight: 600;
  color: #2563EB;
  background-color: rgba(59, 130, 246, 0.1);
  padding: 2px 5px;
  border-radius: 3px;
}

[data-theme="dark"] .card-half-content .cloze {
  color: #60A5FA;
  background-color: rgba(96, 165, 250, 0.15);
}

/* ============================================================
   DEFINITION LIST
   ============================================================ */

.card-half-content dl {
  margin: 10px 0;
}

.card-half-content dt {
  font-weight: 600;
  color: #1F2937;
  margin-top: 8px;
}

[data-theme="dark"] .card-half-content dt {
  color: #F3F4F6;
}

.card-half-content dd {
  margin-left: 14px;
  padding: 6px 0;
  color: #4B5563;
  border-left: 2px solid #E5E7EB;
  padding-left: 12px;
}

[data-theme="dark"] .card-half-content dd {
  color: #9CA3AF;
  border-left-color: #374151;
}

/* ============================================================
   HORIZONTAL RULE (Answer Divider)
   ============================================================ */

.card-half-content hr,
.card-half-content hr#answer {
  border: none;
  height: 1px;
  background-color: #D1D5DB;
  margin: 16px 0;
}

[data-theme="dark"] .card-half-content hr,
[data-theme="dark"] .card-half-content hr#answer {
  background-color: #374151;
}

/* ============================================================
   IMAGES
   ============================================================ */

.card-half-content img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 8px 0;
}

/* ============================================================
   OVERFLOW INDICATOR
   ============================================================ */

/* Overflow indicator */
.overflow-indicator {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 36px;
  background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.95));
  display: none;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 6px;
  pointer-events: none;
}

[data-theme="dark"] .overflow-indicator {
  background: linear-gradient(to bottom, transparent, rgba(17, 24, 39, 0.95));
}

.overflow-indicator.visible {
  display: flex;
}

.overflow-indicator-text {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: #6B7280;
  opacity: 0.8;
}

[data-theme="dark"] .overflow-indicator-text {
  color: #9CA3AF;
}

/* ============================================================
   CAROUSEL NAVIGATION
   ============================================================ */

/* Carousel navigation */
.carousel-nav {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 20px;
  background: var(--carousel-nav-bg, rgba(22, 27, 34, 0.95));
  border-top: 1px solid var(--border-color, #30363d);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="light"] .carousel-nav {
  background: rgba(255, 255, 255, 0.95);
  border-top-color: #E5E7EB;
}

[data-theme="dark"] .carousel-nav {
  background: rgba(22, 27, 34, 0.95);
  border-top-color: #374151;
}

.carousel-nav-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid #D1D5DB;
  background: transparent;
  color: #6B7280;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

[data-theme="dark"] .carousel-nav-btn {
  border-color: #4B5563;
  color: #9CA3AF;
}

.carousel-nav-btn:hover:not(:disabled) {
  background: #F3F4F6;
  color: #374151;
  transform: scale(1.05);
  border-color: #9CA3AF;
}

[data-theme="dark"] .carousel-nav-btn:hover:not(:disabled) {
  background: #374151;
  color: #E5E7EB;
  border-color: #6B7280;
}

.carousel-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  border-color: #E5E7EB;
  color: #D1D5DB;
}

[data-theme="dark"] .carousel-nav-btn:disabled {
  border-color: #374151;
  color: #4B5563;
}

.carousel-counter {
  font-size: 16px;
  font-weight: 500;
  color: #6B7280;
  min-width: 60px;
  text-align: center;
}

[data-theme="dark"] .carousel-counter {
  color: #9CA3AF;
}

.carousel-counter .current {
  font-weight: 700;
  color: #374151;
}

[data-theme="dark"] .carousel-counter .current {
  color: #E5E7EB;
}

/* ============================================================
   EMPTY STATE
   ============================================================ */

/* Empty state */
#emptyState {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: #6B7280;
  animation: fadeIn 0.3s ease;
}

[data-theme="dark"] #emptyState {
  color: #9CA3AF;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================
   RESPONSIVE ADJUSTMENTS
   ============================================================ */

/* Responsive adjustments */
@media (max-width: 768px) {
  .card-stack-container {
    padding: 20px;
    height: 500px;
  }
  
  .card-stack {
    width: 280px;
    height: 420px;
  }
  
  .preview-card[data-position="1"] {
    transform: translateX(24px) translateY(-10px) scale(0.92) rotate(2deg);
  }
  
  .preview-card[data-position="2"] {
    transform: translateX(36px) translateY(0px) scale(0.87) rotate(4deg);
  }
  
  .preview-card[data-position="3"] {
    transform: translateX(48px) translateY(10px) scale(0.82) rotate(7deg);
  }
  
  .card-half {
    padding: 12px;
  }
  
  .card-half-content {
    font-size: 12px;
  }
  
  .card-half-content .badge {
    font-size: 0.7em;
  }
  
  .card-half-content table {
    font-size: 0.8em;
  }
}

/* ============================================================
   SPOILER CLICK/TAP FUNCTIONALITY (JS-free fallback)
   ============================================================ */

.card-half-content .spoiler:focus {
  background-color: #F3F4F6;
  color: #1F2937;
  border-color: #00E5FF;
  border-style: solid;
  outline: none;
}

.card-half-content .spoiler:focus::before {
  opacity: 0;
  pointer-events: none;
}

[data-theme="dark"] .card-half-content .spoiler:focus {
  background-color: #4B5563;
  color: #E5E7EB;
  border-color: #22D3EE;
}

[data-theme="dark"] .card-half-content .spoiler:focus::before {
  opacity: 0;
}