:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: rgba(26, 34, 53, 0.7);
  --bg-card-hover: rgba(36, 48, 74, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(245, 158, 11, 0.35);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-gold: #f59e0b;
  --accent-gold-light: #fbbf24;
  --accent-red: #ef4444;
  --accent-emerald: #10b981;
  --accent-blue: #38bdf8;
  --accent-purple: #a855f7;
  --kannada-yellow: #ffc107;
  --kannada-red: #e53935;
  --glass-bg: rgba(17, 24, 39, 0.8);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.5);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Background subtle glow */
body::before {
  content: "";
  position: fixed;
  top: -10vw;
  left: 20%;
  width: 60vw;
  height: 40vw;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, rgba(239, 68, 68, 0.04) 50%, transparent 80%);
  z-index: -1;
  pointer-events: none;
}

.kannada-font {
  font-family: 'Noto Sans Kannada', sans-serif;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header & Banner */
header {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.95) 0%, rgba(11, 15, 25, 0.9) 100%);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.flag-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(180deg, #ffc107 50%, #e53935 50%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
  font-size: 1.25rem;
  font-weight: 800;
  color: #1e1b4b;
  flex-shrink: 0;
}

.brand-title {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 40%, var(--accent-gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-kannada {
  font-size: 1.1rem;
  color: var(--accent-gold);
  font-weight: 600;
  margin-left: 0.5rem;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-gold);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.stats-bar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.stat-number {
  color: var(--text-primary);
  font-weight: 700;
}

/* Navigation Tabs */
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
  scrollbar-width: none;
}

.nav-tabs::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
  color: #0b0f19;
  background: var(--accent-gold);
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
}

/* Main Content */
main {
  padding: 2rem 0 4rem;
}

.view-panel {
  display: none;
}

.view-panel.active {
  display: block;
  animation: fadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Hero Section */
.hero-card {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.7) 0%, rgba(17, 24, 39, 0.8) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.hero-card::after {
  content: "ಕನ್ನಡ";
  position: absolute;
  right: -20px;
  bottom: -40px;
  font-size: 9rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.02);
  pointer-events: none;
  font-family: 'Noto Sans Kannada', sans-serif;
}

.hero-title {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 760px;
  margin-bottom: 1.5rem;
}

.quick-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.qstat-box {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.qstat-icon {
  font-size: 1.5rem;
}

.qstat-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-gold);
}

.qstat-lbl {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

/* Search and Filter Controls */
.controls-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  backdrop-filter: blur(10px);
}

.search-bar-wrap {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.75rem;
  background: rgba(11, 15, 25, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: all 0.2s ease;
}

.search-input:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.clear-search-btn {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: none;
}

.category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.cat-pill {
  padding: 0.4rem 0.85rem;
  border-radius: 9999px;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.cat-pill:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.cat-pill.active {
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-gold);
  border-color: var(--accent-gold);
}

.cat-pill .count {
  font-size: 0.7rem;
  padding: 0.1rem 0.4rem;
  border-radius: 9999px;
  background: rgba(0, 0, 0, 0.3);
}

/* Filter Sub-Bar */
.filter-subbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.mode-toggles {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toggle-chip {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  cursor: pointer;
}

.toggle-chip.active {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-blue);
  border-color: var(--accent-blue);
}

/* Phrases Grid */
.phrases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.25rem;
}

.phrase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  backdrop-filter: blur(8px);
}

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

.phrase-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.phrase-index {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
}

.phrase-category-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-gold);
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.icon-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.icon-btn.star-btn.starred {
  color: var(--accent-gold);
}

.phrase-body {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.phrase-english {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.phrase-kannada-roman {
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.01em;
}

.phrase-kannada-script {
  font-size: 1.25rem;
  color: var(--accent-gold);
  font-weight: 500;
  line-height: 1.4;
  margin-top: 0.15rem;
}

.phrase-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

.audio-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
  color: var(--accent-gold);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.audio-btn:hover {
  background: var(--accent-gold);
  color: #0b0f19;
}

.audio-btn.playing {
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.copy-btn {
  font-size: 0.8rem;
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
}

.copy-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
  grid-column: 1 / -1;
}

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

/* LEGO BLOCKS VIEW */
.lego-intro-card {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.6) 0%, rgba(20, 28, 44, 0.8) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
}

.lego-blocks-container {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.lego-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

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

.lego-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lego-number-badge {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-gold);
  color: #0b0f19;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.lego-card-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #ffffff;
}

.lego-affix-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.affix-tag {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  font-family: monospace;
}

.lego-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.lego-table-wrap {
  overflow-x: auto;
}

.lego-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.lego-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.3);
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
}

.lego-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

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

.root-word {
  font-weight: 600;
  color: var(--accent-gold);
}

.kannada-lego-highlight {
  background: rgba(245, 158, 11, 0.15);
  color: #fff;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-weight: 700;
}

/* LEGO BUILDER SANDBOX */
.sandbox-card {
  background: linear-gradient(135deg, rgba(26, 34, 53, 0.95) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-top: 2rem;
}

.sandbox-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

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

.sandbox-slots {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 1.25rem;
  background: rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-md);
  border: 1px dashed rgba(245, 158, 11, 0.4);
  margin-bottom: 1.5rem;
  min-height: 80px;
}

.lego-slot-block {
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.lego-slot-block.subject {
  background: #3b82f6;
  color: #ffffff;
}

.lego-slot-block.root {
  background: #f59e0b;
  color: #0b0f19;
}

.lego-slot-block.suffix {
  background: #10b981;
  color: #ffffff;
}

.sandbox-result-box {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.sandbox-phrase-out {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
}

.sandbox-translation-out {
  font-size: 1rem;
  color: var(--accent-gold);
}

.chips-picker-group {
  margin-top: 1.25rem;
}

.chips-group-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.chips-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.lego-chip {
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

.lego-chip.subject {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border-color: rgba(59, 130, 246, 0.3);
}

.lego-chip.root {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.3);
}

.lego-chip.suffix {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.3);
}

.lego-chip:hover {
  transform: translateY(-2px);
  filter: brightness(1.2);
}

/* BENGALURU AUTO PRO SCENARIO */
.auto-hero {
  background: linear-gradient(135deg, #1e1b4b 0%, #172554 100%);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-lg);
}

.auto-badge {
  background: #ffc107;
  color: #0b0f19;
  font-weight: 800;
  padding: 0.3rem 0.8rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  display: inline-block;
  margin-bottom: 1rem;
}

.auto-full-phrase {
  font-size: 1.45rem;
  font-weight: 800;
  line-height: 1.5;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.auto-english-translation {
  font-size: 1.15rem;
  color: var(--accent-gold-light);
  margin-bottom: 1.25rem;
  font-style: italic;
}

.auto-context-box {
  background: rgba(0, 0, 0, 0.35);
  border-left: 4px solid var(--accent-gold);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.scenario-parts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.scenario-part-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.scenario-part-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.part-badge {
  background: var(--accent-blue);
  color: #0b0f19;
  font-weight: 800;
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
}

.part-target-phrase {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.breakdown-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.breakdown-item {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-size: 0.9rem;
}

.b-word {
  font-weight: 700;
  color: var(--accent-gold);
  background: rgba(245, 158, 11, 0.1);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
}

.b-meaning {
  color: var(--text-secondary);
}

/* FLASHCARDS VIEW */
.flashcard-wrapper {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.flashcard-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.flashcard-scene {
  perspective: 1000px;
  height: 320px;
  width: 100%;
}

.flashcard {
  width: 100%;
  height: 100%;
  position: relative;
  transition: transform 0.6s cubic-bezier(0.4, 0.2, 0.2, 1);
  transform-style: preserve-3d;
  cursor: pointer;
}

.flashcard.flipped {
  transform: rotateY(180deg);
}

.card-face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  text-align: center;
  border: 1px solid var(--border-highlight);
  box-shadow: var(--shadow-lg);
}

.card-face.front {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

.card-face.back {
  background: linear-gradient(135deg, #1e1b4b 0%, #172554 100%);
  transform: rotateY(180deg);
}

.card-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card-main-text {
  font-size: 1.8rem;
  font-weight: 800;
  color: #ffffff;
}

.card-sub-text {
  font-size: 1.5rem;
  color: var(--accent-gold);
  font-weight: 600;
}

.flashcard-nav-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.action-btn-large {
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--accent-gold);
  color: #0b0f19;
}

.btn-primary:hover {
  background: var(--accent-gold-light);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* QUIZ VIEW */
.quiz-wrapper {
  max-width: 640px;
  margin: 0 auto;
}

.quiz-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-md);
}

.quiz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.quiz-score-badge {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-gold);
  background: rgba(245, 158, 11, 0.15);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
}

.quiz-question-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1.5rem;
  text-align: center;
}

.quiz-options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  margin-bottom: 1.75rem;
}

.quiz-opt-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.quiz-opt-btn:hover:not(.answered) {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(245, 158, 11, 0.4);
}

.quiz-opt-btn.correct {
  background: rgba(16, 185, 129, 0.2);
  border-color: var(--accent-emerald);
  color: #34d399;
}

.quiz-opt-btn.wrong {
  background: rgba(239, 68, 68, 0.2);
  border-color: var(--accent-red);
  color: #f87171;
}

/* Footer */
footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border-color);
  background: #080c14;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-domain {
  color: var(--accent-gold);
  font-weight: 600;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: #1e293b;
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .hero-title {
    font-size: 1.5rem;
  }
  .phrases-grid {
    grid-template-columns: 1fr;
  }
  .brand-title {
    font-size: 1.3rem;
  }
  .quick-stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .flashcard-scene {
    height: 280px;
  }
  .card-main-text {
    font-size: 1.4rem;
  }
}