/* ==========================================================================
   딱1분 오늘의 맞춤법 퀴즈 - Modern Premium Stylesheet
   ========================================================================== */

:root {
  --bg-main: #0B0F19;
  --bg-gradient: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.18) 0%, rgba(11, 15, 25, 1) 75%);
  --surface-card: rgba(26, 34, 53, 0.75);
  --surface-hover: rgba(36, 48, 74, 0.85);
  --surface-active: rgba(49, 65, 102, 0.95);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(99, 102, 241, 0.4);
  
  --primary: #6366F1;
  --primary-light: #818CF8;
  --primary-dark: #4F46E5;
  --primary-glow: rgba(99, 102, 241, 0.35);

  --streak-start: #F59E0B;
  --streak-end: #EF4444;
  --streak-glow: rgba(245, 158, 11, 0.3);

  --success: #10B981;
  --success-bg: rgba(16, 185, 129, 0.12);
  --success-border: rgba(16, 185, 129, 0.4);
  
  --danger: #F43F5E;
  --danger-bg: rgba(244, 63, 94, 0.12);
  --danger-border: rgba(244, 63, 94, 0.4);

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 24px var(--primary-glow);

  --font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Base & Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  min-height: 100%;
  background-color: var(--bg-main);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* App Viewport Container (App-like 480px width) */
.app-container {
  max-width: 480px;
  min-height: 100vh;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  padding: 16px 20px 90px 20px; /* 90px bottom pad for fixed anchor ad */
  position: relative;
}

/* Confetti Canvas */
#confetti-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 999;
}

/* ==========================================================================
   Top Header Bar
   ========================================================================== */
.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0 18px 0;
}

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

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px var(--primary-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.brand-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #FFFFFF 20%, #C7D2FE 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Streak Pill */
.streak-pill {
  display: flex;
  align-items: center;
  gap: 5px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.35);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 700;
  color: #FBBF24;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.streak-pill:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--streak-glow);
  background: rgba(245, 158, 11, 0.2);
}

.streak-pill .flame-icon {
  display: inline-block;
  animation: pulse-flame 1.8s infinite ease-in-out;
}

@keyframes pulse-flame {
  0%, 100% { transform: scale(1); filter: drop-shadow(0 0 2px #F59E0B); }
  50% { transform: scale(1.18); filter: drop-shadow(0 0 6px #EF4444); }
}

/* Icon Button */
.icon-btn {
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.icon-btn:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
  border-color: var(--border-highlight);
}

/* ==========================================================================
   Category Filter Tabs Navigation
   ========================================================================== */
.category-tabs-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 14px 2px;
  margin-bottom: 8px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.category-tabs-bar::-webkit-scrollbar {
  display: none;
}

.category-tab {
  flex-shrink: 0;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
  user-select: none;
}

.category-tab:hover {
  color: var(--text-primary);
  background: var(--surface-hover);
  border-color: var(--border-highlight);
  transform: translateY(-1px);
}

.category-tab.active {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #FFFFFF;
  border-color: var(--primary-light);
  box-shadow: 0 4px 14px var(--primary-glow);
}

/* ==========================================================================
   Date & Progress Subheader
   ========================================================================== */
.quiz-meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  font-size: 0.85rem;
}

.date-badge {
  color: var(--text-secondary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.category-tag {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--primary-light);
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

/* Mode Switcher Banner (Today's Quiz vs Bonus Mode) */
.mode-banner {
  display: none;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid var(--primary-dark);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  margin-bottom: 14px;
  font-size: 0.84rem;
  justify-content: space-between;
  align-items: center;
}

.mode-banner.active {
  display: flex;
}

.mode-banner .reset-daily-btn {
  background: none;
  border: none;
  color: var(--primary-light);
  text-decoration: underline;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
}

/* ==========================================================================
   Main Quiz Card
   ========================================================================== */
.card {
  background: var(--surface-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.quiz-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.quiz-index-badge {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.routine-time-badge {
  font-size: 0.76rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Question Sentence Box */
.question-box {
  margin: 10px 0 26px 0;
  text-align: center;
}

.question-guide {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-weight: 500;
}

.question-text {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--text-primary);
  word-break: keep-all;
  padding: 0 4px;
}

.question-text .highlight-slot {
  display: inline-block;
  color: #FDE047;
  background: rgba(253, 224, 71, 0.12);
  border-bottom: 2px dashed #FDE047;
  padding: 1px 6px;
  border-radius: 4px;
}

/* ==========================================================================
   2-Choice Interactive Option Buttons
   ========================================================================== */
.options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 18px;
}

.option-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 22px 14px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  outline: none;
}

.option-btn:hover:not(:disabled) {
  background: var(--surface-hover);
  border-color: var(--border-highlight);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -4px rgba(99, 102, 241, 0.25);
}

.option-btn:active:not(:disabled) {
  transform: translateY(0) scale(0.98);
}

.option-label {
  font-size: 0.8rem;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.08);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.option-text {
  font-size: 1.28rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

/* Selection State before answer check */
.option-btn.selected {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--primary-light);
  box-shadow: 0 0 18px var(--primary-glow);
}

.option-btn.selected .option-label {
  background: var(--primary);
  color: #FFFFFF;
}

/* Correct / Incorrect Reveal States */
.option-btn.is-correct {
  background: var(--success-bg) !important;
  border-color: var(--success) !important;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.3) !important;
}

.option-btn.is-correct .option-label {
  background: var(--success);
  color: #FFFFFF;
}

.option-btn.is-correct .option-text {
  color: #A7F3D0;
}

.option-btn.is-wrong {
  background: var(--danger-bg) !important;
  border-color: var(--danger) !important;
  opacity: 0.7;
}

.option-btn.is-wrong .option-label {
  background: var(--danger);
  color: #FFFFFF;
}

.option-btn.is-wrong .option-text {
  color: #FECDD3;
  text-decoration: line-through;
}

/* Submit Action Button */
.btn-primary {
  width: 100%;
  padding: 16px;
  border-radius: var(--radius-md);
  border: none;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #FFFFFF;
  font-size: 1.05rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 4px 14px var(--primary-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
  filter: brightness(1.08);
}

.btn-primary:active:not(:disabled) {
  transform: scale(0.99);
}

.btn-primary:disabled {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  box-shadow: none;
  cursor: not-allowed;
}

/* ==========================================================================
   AdSense Placement Slots (In-Card & Banner)
   ========================================================================== */
.ad-slot-container {
  margin: 18px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(15, 23, 42, 0.5);
  border: 1px dashed rgba(255, 255, 255, 0.12);
  text-align: center;
  position: relative;
  min-height: 100px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.ad-label {
  position: absolute;
  top: 4px;
  right: 8px;
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.ad-fallback-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 18px 12px;
  color: var(--text-muted);
  font-size: 0.8rem;
  gap: 6px;
}

.ad-fallback-placeholder span {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Bottom Sticky Anchor Ad (320x50 on mobile) */
.bottom-anchor-ad {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 60px;
  background: rgba(11, 15, 25, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 90;
}

/* ==========================================================================
   Result & Retention Section (Expands on answer)
   ========================================================================== */
.result-section {
  display: none;
  margin-top: 20px;
  animation: slide-up 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.result-section.active {
  display: block;
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Result Header Box */
.result-banner {
  padding: 16px;
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.result-banner.is-correct {
  background: var(--success-bg);
  border: 1px solid var(--success-border);
}

.result-banner.is-wrong {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
}

.result-icon {
  font-size: 2rem;
  line-height: 1;
}

.result-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 2px;
}

.result-subtitle {
  font-size: 0.86rem;
  color: var(--text-secondary);
}

/* Explanation Content Box */
.explanation-card {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 18px 16px;
  margin-bottom: 18px;
}

.explanation-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--primary-light);
  margin-bottom: 10px;
}

.explanation-body {
  font-size: 0.94rem;
  line-height: 1.65;
  color: var(--text-primary);
  margin-bottom: 14px;
  word-break: keep-all;
}

/* 3-Second Memory Tip Box */
.tip-box {
  background: rgba(245, 158, 11, 0.1);
  border-left: 3px solid #F59E0B;
  padding: 10px 14px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.86rem;
  color: #FDE68A;
  line-height: 1.55;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.tip-box strong {
  color: #FBBF24;
  white-space: nowrap;
}

/* Retention & Share Buttons Grid */
.action-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 18px;
}

.btn-secondary {
  padding: 14px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: var(--surface-hover);
  border-color: var(--border-highlight);
  transform: translateY(-1px);
}

.btn-share {
  background: rgba(254, 229, 0, 0.15);
  border: 1px solid rgba(254, 229, 0, 0.3);
  color: #FDE047;
}

.btn-share:hover {
  background: rgba(254, 229, 0, 0.25);
  border-color: #FDE047;
}

.btn-next-quiz {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #FFFFFF;
  font-size: 0.98rem;
  font-weight: 800;
  padding: 15px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 6px 20px var(--primary-glow);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  margin-bottom: 2px;
}

.btn-next-quiz:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.55);
  filter: brightness(1.08);
}

.btn-bonus {
  grid-column: span 2;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.35);
  color: var(--primary-light);
  padding: 15px;
  font-size: 0.95rem;
}

.btn-bonus:hover {
  background: rgba(99, 102, 241, 0.22);
}

/* ==========================================================================
   Modals (Streak & Stats, About/Guide)
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: #131A2A;
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  position: relative;
  transform: scale(0.95);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-card {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 4px;
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 20px;
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.stat-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  text-align: center;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-light);
  margin-bottom: 2px;
}

.stat-item:nth-child(1) .stat-value {
  color: #F59E0B;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.streak-badges-row {
  display: flex;
  justify-content: space-around;
  margin-bottom: 20px;
  padding: 12px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.badge-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  color: var(--text-muted);
  opacity: 0.45;
}

.badge-item.unlocked {
  opacity: 1;
  color: var(--text-primary);
}

.badge-icon {
  font-size: 1.6rem;
}

/* Toast Message */
.toast-msg {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(16, 24, 39, 0.95);
  border: 1px solid var(--border-highlight);
  color: #FFFFFF;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s ease;
  z-index: 300;
}

.toast-msg.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   Footer & Legal Navigation
   ========================================================================== */
.footer-bar {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links a:hover, .footer-links a.active {
  color: var(--primary-light);
  text-decoration: underline;
}

.footer-links .sep {
  color: var(--border-subtle);
  opacity: 0.6;
}

.copyright {
  color: var(--text-muted);
  font-size: 0.74rem;
}

/* ==========================================================================
   Legal & Subpages Styles
   ========================================================================== */
.legal-container {
  max-width: 680px;
}

.back-link-btn {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.86rem;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.back-link-btn:hover {
  color: var(--text-primary);
  background: var(--surface-hover);
  border-color: var(--border-highlight);
}

.legal-card {
  padding: 28px 24px;
  margin-bottom: 24px;
}

.legal-heading {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.legal-subtitle {
  color: var(--primary-light);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.legal-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.legal-section {
  margin-bottom: 24px;
}

.legal-section h2 {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.legal-section p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 10px;
}

.legal-section ul {
  list-style: disc inside;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-left: 8px;
  margin-bottom: 12px;
}

.legal-section li {
  margin-bottom: 8px;
}

.text-link {
  color: var(--primary-light);
  text-decoration: underline;
}

.contact-box {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 10px;
}

.contact-box p {
  margin-bottom: 6px;
  font-size: 0.88rem;
}

.legal-footer-nav {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
}

.legal-nav-link {
  color: var(--primary-light);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
}

.legal-nav-link:hover {
  text-decoration: underline;
}

/* Feature Grid for About page */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 16px;
}

@media (min-width: 500px) {
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.feature-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.feature-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0;
}

/* Contact Channels */
.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 14px;
}

.channel-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px;
}

.channel-icon {
  font-size: 2rem;
}

.channel-info h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.channel-info p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

/* FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  cursor: pointer;
}

.faq-item summary {
  font-size: 0.94rem;
  color: var(--text-primary);
  outline: none;
}

.faq-item p {
  margin-top: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Homepage SEO Info Section */
.home-info-section {
  margin-top: 24px;
  background: rgba(26, 34, 53, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.home-info-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.guide-tip-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.guide-tip-item {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.6;
  background: rgba(255, 255, 255, 0.02);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
}

.guide-tip-item strong {
  color: var(--text-primary);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 360px) {
  .app-container {
    padding: 12px 14px 80px 14px;
  }
  .question-text {
    font-size: 1.18rem;
  }
  .option-btn {
    padding: 18px 10px;
  }
  .option-text {
    font-size: 1.1rem;
  }
}