/* ToonCraft - Webtoon & Manga Academy RPG Stylesheet */
:root {
  /* LIGHT THEME (DEFAULT) */
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.94);
  --bg-card-hover: #ffffff;
  --bg-subtle: #f1f5f9;
  --border-color: rgba(226, 232, 240, 0.95);
  --border-hover: rgba(245, 158, 11, 0.5);

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;

  --accent-amber: #d97706;
  --accent-amber-bright: #f59e0b;
  --accent-amber-glow: rgba(245, 158, 11, 0.25);
  --accent-blue: #0284c7;
  --accent-purple: #7c3aed;
  --accent-green: #059669;
  --accent-rose: #e11d48;

  --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.08), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --card-shadow-hover: 0 14px 28px -4px rgba(15, 23, 42, 0.12), 0 4px 10px -2px rgba(15, 23, 42, 0.06);
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.85);
  --bg-card-hover: rgba(30, 41, 59, 0.95);
  --bg-subtle: rgba(255, 255, 255, 0.05);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(245, 158, 11, 0.4);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-amber: #f59e0b;
  --accent-amber-bright: #fbbf24;
  --accent-amber-glow: rgba(245, 158, 11, 0.3);
  --accent-blue: #38bdf8;
  --accent-purple: #a855f7;
  --accent-green: #10b981;
  --accent-rose: #f43f5e;

  --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  --card-shadow-hover: 0 16px 36px rgba(0, 0, 0, 0.55);
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
  min-height: 100vh;
  line-height: 1.6;
  background-image:
    radial-gradient(circle at 10% 15%, rgba(245, 158, 11, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 90% 20%, rgba(56, 189, 248, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 50% 85%, rgba(168, 85, 247, 0.08) 0%, transparent 50%);
  background-attachment: fixed;
  transition: background-color 0.3s ease, color 0.3s ease;
}

[data-theme="dark"] body {
  background-image:
    radial-gradient(circle at 10% 15%, rgba(245, 158, 11, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 90% 20%, rgba(56, 189, 248, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 50% 85%, rgba(168, 85, 247, 0.06) 0%, transparent 50%);
}

.container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 20px;
}

/* HEADER & PLAYER HUD */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

[data-theme="dark"] .site-header {
  background: rgba(11, 15, 25, 0.88);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}

.brand-icon-box {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #ffffff;
  box-shadow: 0 4px 14px var(--accent-amber-glow);
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #b45309, #d97706, #0284c7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="dark"] .brand-title {
  background: linear-gradient(135deg, #f59e0b, #fbbf24, #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* PLAYER STATUS HUD */
.player-hud {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  padding: 8px 20px;
  box-shadow: var(--card-shadow);
}

.hud-profile {
  display: flex;
  align-items: center;
  gap: 10px;
}

.player-level-badge {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.85rem;
  padding: 3px 10px;
  border-radius: 9999px;
  box-shadow: 0 2px 6px rgba(217, 119, 6, 0.3);
}

.player-meta {
  display: flex;
  flex-direction: column;
}

.player-title-text {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

.player-rank-tag {
  font-size: 0.72rem;
  color: var(--accent-amber);
  font-weight: 700;
}

.hud-exp-wrap {
  min-width: 150px;
}

.exp-bar-bg {
  width: 100%;
  height: 8px;
  background: rgba(0, 0, 0, 0.08);
  border-radius: 9999px;
  overflow: hidden;
  position: relative;
}

[data-theme="dark"] .exp-bar-bg {
  background: rgba(255, 255, 255, 0.1);
}

.exp-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #f59e0b, #10b981);
  border-radius: 9999px;
  transition: width 0.4s ease;
}

.exp-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: monospace;
  margin-top: 2px;
  text-align: right;
  font-weight: 600;
}

.hud-currency {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 0.85rem;
}

.currency-item {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--text-primary);
}

.hud-actions {
  display: flex;
  gap: 8px;
}

.btn-theme-toggle {
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .btn-theme-toggle {
  background: rgba(255, 255, 255, 0.05);
}

.btn-theme-toggle:hover {
  color: var(--accent-amber);
  border-color: var(--accent-amber);
  transform: translateY(-1px);
}

/* HERO SECTION */
.hero-banner {
  padding: 36px 0 20px;
  text-align: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: 9999px;
  color: #b45309;
  font-size: 0.82rem;
  font-weight: 800;
  margin-bottom: 14px;
}

[data-theme="dark"] .hero-tag {
  color: var(--accent-amber);
}

.hero-h1 {
  font-size: 2.6rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  line-height: 1.25;
  color: var(--text-primary);
}

.hero-p {
  color: var(--text-secondary);
  font-size: 1.08rem;
  max-width: 820px;
  margin: 0 auto 24px;
  line-height: 1.65;
}

/* NAVIGATION TABS */
.nav-tabs-bar {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 30px;
  position: sticky;
  top: 72px;
  z-index: 150;
  background: var(--bg-primary);
  padding: 10px 0;
}

.nav-tab-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.nav-tab-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--accent-amber);
  transform: translateY(-1px);
}

.nav-tab-btn.active {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #ffffff;
  border-color: #f59e0b;
  box-shadow: 0 4px 14px var(--accent-amber-glow);
}

/* TAB PANES */
.tab-pane {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* CURRICULUM SECTION */
.tier-filter-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.tier-filter-btn {
  padding: 8px 18px;
  border-radius: 9999px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.tier-filter-btn:hover {
  border-color: var(--accent-amber);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.tier-filter-btn.active {
  background: var(--accent-amber);
  color: #ffffff;
  border-color: var(--accent-amber);
  box-shadow: 0 4px 12px var(--accent-amber-glow);
}

.tier-header-block {
  border-left: 5px solid var(--accent-amber);
  background: var(--bg-card);
  padding: 20px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-top: 36px;
  margin-bottom: 20px;
  box-shadow: var(--card-shadow);
  border-top: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.tier-title-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.tier-icon {
  font-size: 1.4rem;
}

.tier-level-badge {
  font-size: 0.75rem;
  background: #f1f5f9;
  color: var(--text-secondary);
  padding: 3px 10px;
  border-radius: 6px;
  font-family: monospace;
  font-weight: 700;
}

[data-theme="dark"] .tier-level-badge {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.tier-desc-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 22px;
}

.module-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.module-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
}

.module-card.completed {
  border-color: rgba(16, 185, 129, 0.6);
  background: rgba(16, 185, 129, 0.03);
}

.module-card.locked {
  opacity: 0.65;
}

.module-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.module-req-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
}

.badge-unlocked {
  background: rgba(2, 132, 199, 0.12);
  color: var(--accent-blue);
}

.badge-locked {
  background: rgba(225, 29, 72, 0.12);
  color: var(--accent-rose);
}

.badge-done {
  font-size: 0.75rem;
  color: var(--accent-green);
  font-weight: 800;
}

.module-card-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 8px;
  line-height: 1.4;
  color: var(--text-primary);
}

.module-card-summary {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 18px;
  flex-grow: 1;
  line-height: 1.55;
}

.module-card-rewards {
  display: flex;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  font-weight: 600;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-study {
  width: 100%;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #ffffff;
  box-shadow: 0 4px 12px var(--accent-amber-glow);
}

.btn-study:hover:not(:disabled) {
  background: linear-gradient(135deg, #d97706, #b45309);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px var(--accent-amber-glow);
}

.btn-study:disabled {
  background: #e2e8f0;
  color: var(--text-muted);
  cursor: not-allowed;
  box-shadow: none;
}

[data-theme="dark"] .btn-study:disabled {
  background: rgba(255, 255, 255, 0.08);
}

/* CANVAS STUDIO */
.canvas-studio-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
  align-items: start;
}

@media (max-width: 992px) {
  .canvas-studio-layout {
    grid-template-columns: 1fr;
  }
}

.studio-toolbar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: var(--card-shadow);
}

.tool-group-title {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

.tool-btn-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.tool-btn {
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 10px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

[data-theme="dark"] .tool-btn {
  background: rgba(255, 255, 255, 0.05);
}

.tool-btn:hover {
  background: #f1f5f9;
  border-color: var(--accent-amber);
}

[data-theme="dark"] .tool-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.tool-btn.active {
  background: var(--accent-amber) !important;
  color: #ffffff !important;
  border-color: var(--accent-amber) !important;
  box-shadow: 0 2px 8px var(--accent-amber-glow);
}

.palette-swatches {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.swatch-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid rgba(0, 0, 0, 0.15);
  cursor: pointer;
  transition: var(--transition);
}

[data-theme="dark"] .swatch-btn {
  border-color: rgba(255, 255, 255, 0.3);
}

.swatch-btn:hover {
  transform: scale(1.15);
}

.swatch-btn.active {
  border-color: var(--text-primary);
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .swatch-btn.active {
  border-color: #ffffff;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
}

.range-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.range-label-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 600;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent-amber);
}

.guide-select {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 700;
  cursor: pointer;
  font-size: 0.85rem;
}

[data-theme="dark"] .guide-select {
  background: #1e293b;
  color: #f8fafc;
}

.croquis-box {
  background: rgba(245, 158, 11, 0.08);
  border: 1px dashed rgba(245, 158, 11, 0.4);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
}

.timer-digits {
  font-size: 2rem;
  font-weight: 900;
  font-family: monospace;
  color: var(--accent-amber);
  margin: 6px 0;
}

.timer-btn-row {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-timer {
  padding: 6px 12px;
  font-size: 0.78rem;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

[data-theme="dark"] .btn-timer {
  background: rgba(255, 255, 255, 0.08);
}

.btn-timer:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

/* CANVAS WRAPPER */
.canvas-wrapper-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.canvas-top-action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.canvas-container-rel {
  position: relative;
  width: 100%;
  aspect-ratio: 8 / 9;
  max-height: 800px;
  background: #ffffff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid #e2e8f0;
}

.drawing-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  z-index: 2;
  touch-action: none;
}

.guide-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* SCROLL SIMULATOR */
.simulator-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 28px;
}

@media (max-width: 900px) {
  .simulator-layout {
    grid-template-columns: 1fr;
  }
}

.sim-controls-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  box-shadow: var(--card-shadow);
}

.tension-meter-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .tension-meter-card {
  background: rgba(255, 255, 255, 0.05);
}

.meter-track {
  width: 100%;
  height: 12px;
  background: #e2e8f0;
  border-radius: 9999px;
  overflow: hidden;
  margin-top: 10px;
}

[data-theme="dark"] .meter-track {
  background: rgba(255, 255, 255, 0.1);
}

.meter-fill {
  height: 100%;
  width: 60%;
  background: linear-gradient(90deg, #0284c7, #f59e0b, #e11d48);
  transition: width 0.3s ease;
}

/* PHONE MOCKUP */
.webtoon-phone-mockup {
  max-width: 440px;
  margin: 0 auto;
  border: 12px solid #1e293b;
  border-radius: 40px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  position: relative;
}

[data-theme="dark"] .webtoon-phone-mockup {
  border-color: #27272a;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
}

.phone-screen {
  height: 680px;
  overflow-y: auto;
  scrollbar-width: thin;
  position: relative;
}

.phone-status-bar {
  display: flex;
  justify-content: space-between;
  padding: 8px 18px;
  font-size: 0.75rem;
  color: #ffffff;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.webtoon-header-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 18px;
  background: rgba(0, 0, 0, 0.85);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.webtoon-content-flow {
  padding: 16px;
}

.sim-cut-card {
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: #ffffff;
  position: relative;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

.sim-cut-badge {
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(0, 0, 0, 0.65);
  padding: 4px 10px;
  border-radius: 9999px;
  display: inline-block;
  align-self: flex-start;
  margin-bottom: 12px;
}

.sim-cut-sfx {
  font-size: 1.8rem;
  font-weight: 900;
  font-style: italic;
  text-shadow: 0 0 12px currentColor, 0 4px 8px #000;
  margin: 14px 0;
  text-align: center;
}

.sim-cut-desc {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 8px;
}

.sim-cut-text {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.45;
  background: rgba(0, 0, 0, 0.55);
  padding: 8px 12px;
  border-radius: 6px;
}

.webtoon-gutter {
  display: flex;
  align-items: center;
  justify-content: center;
  transition: height 0.2s ease;
}

.gutter-indicator {
  font-size: 0.7rem;
  color: rgba(0, 0, 0, 0.35);
  font-family: monospace;
  font-weight: 700;
}

[data-theme="dark"] .gutter-indicator {
  color: rgba(255, 255, 255, 0.3);
}

.webtoon-footer-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: #18181b;
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 700;
  margin-top: 30px;
}

.footer-btn-next {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  padding: 6px 14px;
  border-radius: 9999px;
  cursor: pointer;
}

/* QUIZ STYLES */
.quiz-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 24px;
}

.quiz-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.quiz-card:hover {
  box-shadow: var(--card-shadow-hover);
}

.quiz-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.quiz-tier-badge {
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 6px;
}

.badge-novice { background: rgba(2, 132, 199, 0.12); color: #0284c7; }
.badge-adept { background: rgba(124, 58, 237, 0.12); color: #7c3aed; }
.badge-advanced { background: rgba(217, 119, 6, 0.12); color: #d97706; }
.badge-master { background: rgba(225, 29, 72, 0.12); color: #e11d48; }

.quiz-reward-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: monospace;
  font-weight: 700;
}

.quiz-question-title {
  font-size: 1.08rem;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.45;
  color: var(--text-primary);
}

.quiz-options-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quiz-opt-btn {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 11px 14px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.88rem;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .quiz-opt-btn {
  background: rgba(255, 255, 255, 0.04);
}

.quiz-opt-btn:hover:not(:disabled) {
  background: #f8fafc;
  border-color: var(--accent-amber);
  transform: translateY(-1px);
}

[data-theme="dark"] .quiz-opt-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
}

.quiz-opt-btn.correct {
  background: rgba(5, 150, 105, 0.15) !important;
  border-color: var(--accent-green) !important;
  color: #059669 !important;
  font-weight: 800;
}

.quiz-opt-btn.wrong {
  background: rgba(225, 29, 72, 0.15) !important;
  border-color: var(--accent-rose) !important;
  color: #e11d48 !important;
}

.quiz-feedback-box {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  line-height: 1.55;
  display: none;
}

.quiz-feedback-box.show {
  display: block;
}

.quiz-feedback-box.correct {
  background: rgba(5, 150, 105, 0.1);
  border: 1px solid rgba(5, 150, 105, 0.35);
  color: #065f46;
}

[data-theme="dark"] .quiz-feedback-box.correct {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-green);
}

.quiz-feedback-box.wrong {
  background: rgba(225, 29, 72, 0.1);
  border: 1px solid rgba(225, 29, 72, 0.35);
  color: #9f1239;
}

[data-theme="dark"] .quiz-feedback-box.wrong {
  background: rgba(239, 68, 68, 0.12);
  color: var(--accent-rose);
}

/* SKILL TREE */
.skill-tree-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.skill-column {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--card-shadow);
}

.skill-cat-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  color: var(--accent-amber);
}

.skill-nodes-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.skill-node {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: var(--transition);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

[data-theme="dark"] .skill-node {
  background: rgba(255, 255, 255, 0.03);
}

.skill-node.learned {
  border-color: var(--accent-green);
  background: rgba(5, 150, 105, 0.08);
}

.skill-node.locked {
  opacity: 0.6;
}

.skill-node-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.skill-name {
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.skill-cost {
  font-size: 0.75rem;
  color: var(--accent-amber);
  font-weight: 800;
}

.skill-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.45;
}

.btn-learn-skill {
  width: 100%;
  padding: 7px 12px;
  font-size: 0.8rem;
  background: rgba(245, 158, 11, 0.15);
  color: #b45309;
  border: 1px solid rgba(245, 158, 11, 0.4);
  font-weight: 700;
}

[data-theme="dark"] .btn-learn-skill {
  color: var(--accent-amber);
}

.btn-learn-skill:hover:not(:disabled) {
  background: var(--accent-amber);
  color: #ffffff;
}

.btn-learn-skill:disabled {
  background: #f1f5f9;
  color: var(--text-muted);
  border-color: transparent;
  cursor: not-allowed;
}

[data-theme="dark"] .btn-learn-skill:disabled {
  background: rgba(255, 255, 255, 0.05);
}

/* ACHIEVEMENTS */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 18px;
}

.achievement-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.achievement-card.unlocked {
  border-color: rgba(245, 158, 11, 0.6);
  background: rgba(245, 158, 11, 0.08);
}

.achievement-card.locked {
  opacity: 0.55;
}

.ach-icon {
  font-size: 2.2rem;
}

.ach-info {
  flex-grow: 1;
}

.ach-name {
  font-size: 0.98rem;
  font-weight: 800;
  margin-bottom: 2px;
  color: var(--text-primary);
}

.ach-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.ach-done-badge {
  font-size: 0.72rem;
  font-weight: 800;
  color: #065f46;
  background: rgba(5, 150, 105, 0.15);
  padding: 3px 10px;
  border-radius: 9999px;
}

.ach-lock-badge {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* CHEATSHEET & TOOLBOX */
.toolbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 24px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--card-shadow);
}

.table-custom {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 14px;
}

.table-custom th, .table-custom td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

.table-custom th {
  color: var(--text-muted);
  font-weight: 800;
  background: rgba(0, 0, 0, 0.02);
}

.table-custom kbd {
  background: #e2e8f0;
  color: #0f172a;
  padding: 2px 7px;
  border-radius: 4px;
  font-family: monospace;
  font-weight: 700;
  border: 1px solid #cbd5e1;
}

[data-theme="dark"] .table-custom kbd {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.2);
}

/* LESSON MODAL */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  z-index: 999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-backdrop.show {
  display: flex;
}

.modal-content-window {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 860px;
  width: 100%;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.25);
  animation: modalPop 0.3s ease;
}

[data-theme="dark"] .modal-content-window {
  background: var(--bg-secondary);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
}

@keyframes modalPop {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 1.6rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-body {
  padding: 26px;
  overflow-y: auto;
  font-size: 0.98rem;
  line-height: 1.75;
  color: var(--text-primary);
}

.lesson-head {
  font-size: 1.35rem;
  font-weight: 900;
  margin: 20px 0 10px;
  color: var(--accent-amber);
}

.lesson-subhead {
  font-size: 1.15rem;
  font-weight: 800;
  margin: 18px 0 8px;
  color: var(--text-primary);
}

.lesson-list {
  padding-left: 22px;
  margin-bottom: 14px;
}

.lesson-list li {
  margin-bottom: 6px;
}

.practice-mission-box {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-top: 24px;
}

.modal-foot {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* TOAST */
.global-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #0f172a;
  color: #f8fafc;
  border: 1px solid var(--accent-amber);
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 9999;
}

.global-toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* FOOTER */
.site-footer {
  margin-top: 60px;
  padding: 30px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 10px;
  font-weight: 600;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent-amber);
}