/* ============================================================
   EchoNovel V3 — Sonar-style Light Mode Design System
   ============================================================ */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
  /* --- Colors (Sonar-inspired) --- */
  --primary: #2BB4D4;
  --primary-dark: #1E91AB;
  --primary-light: #5CC8E4;
  --accent: #F0783C;
  --accent-dark: #D45F28;
  --navy: #1B263B;
  --navy-light: #243352;

  /* --- Background --- */
  --bg-page: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F8FBFD;
  --bg-section: #F7FAFB;
  --bg-input: #F5F5F5;
  --bg-dark: #1B263B;
  --bg-header: rgba(255,255,255,0.96);

  /* --- Text --- */
  --text-primary: #1B263B;
  --text-secondary: #4A5568;
  --text-muted: #8F8F8F;
  --text-on-dark: #FFFFFF;
  --text-on-primary: #FFFFFF;

  /* --- Borders --- */
  --border: #EBEBEB;
  --border-focus: var(--primary);
  --border-card: 1.5px solid #EBEBEB;

  /* --- Shadows --- */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-primary: 0 6px 24px rgba(43,180,212,0.30);
  --shadow-accent: 0 6px 24px rgba(240,120,60,0.30);

  /* --- Radii --- */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 100px;
  --radius-full: 50%;

  /* --- Spacing --- */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 80px;

  /* --- Typography --- */
  --font-en: 'Figtree', sans-serif;
  --font-th: 'IBM Plex Sans Thai Looped', sans-serif;
  --font-body: var(--font-th), var(--font-en), sans-serif;
  --font-heading: var(--font-en), var(--font-th), sans-serif;

  /* --- Transitions --- */
  --transition: all 0.2s ease;
  --transition-slow: all 0.3s ease;

  /* --- Container --- */
  --container-max: 1200px;
  --container-padding: 24px;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

img { max-width: 100%; height: auto; display: block; }

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: clamp(2rem, 4vw, 3.25rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
h4 { font-size: 1.1rem; }
h5 { font-size: 0.95rem; }
h6 { font-size: 0.85rem; }

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
  display: block;
}

/* ===== CONTAINER ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--text-on-primary);
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(43,180,212,0.4);
  color: var(--text-on-primary);
}

.btn-accent {
  background: var(--accent);
  color: #FFFFFF;
  box-shadow: var(--shadow-accent);
}
.btn-accent:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(43,180,212,0.04);
}

.btn-ghost {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 8px 16px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.btn-ghost:hover {
  background: var(--bg-section);
  color: var(--text-primary);
}

.btn-sm { padding: 8px 20px; font-size: 0.8rem; }
.btn-lg { padding: 16px 36px; font-size: 1rem; }

/* ===== CARDS ===== */
.card {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}

.card:hover {
  border-color: rgba(43,180,212,0.3);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-flat {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
}

/* ===== INPUTS ===== */
.input {
  width: 100%;
  padding: 14px 18px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}

.input:focus {
  border-color: var(--primary);
  background: var(--bg-card);
  box-shadow: 0 0 0 3px rgba(43,180,212,0.1);
}

.input::placeholder { color: var(--text-muted); }

textarea.input { resize: vertical; min-height: 100px; }

/* ===== TAGS / CHIPS ===== */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--bg-section);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}

.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== HEADER (Sticky Glass) ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-header, rgba(255,255,255,0.96));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 72px;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
}

.site-logo img { height: 36px; }
.site-logo span { color: var(--primary); }

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

.header-nav a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}

.header-nav a:hover { background: var(--bg-section); color: var(--text-primary); }
.header-nav a.active { color: var(--primary); font-weight: 600; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ===== MOBILE BOTTOM NAV ===== */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding: 8px 0;
  padding-bottom: max(8px, env(safe-area-inset-bottom));
}

.bottom-nav .container {
  display: flex;
  justify-content: space-around;
  align-items: center;
}

.bottom-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 4px 12px;
  color: var(--text-muted);
  font-size: 0.6rem;
  text-decoration: none;
  transition: var(--transition);
}

.bottom-nav a i { font-size: 1.3rem; }
.bottom-nav a.active { color: var(--primary); }
.bottom-nav a:hover { color: var(--primary); }

/* ===== FOOTER (Dark Navy) ===== */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,0.7);
  padding: var(--space-3xl) 0 var(--space-xl);
  margin-top: var(--space-3xl);
}

.site-footer h4 { color: #FFFFFF; font-size: 1rem; margin-bottom: 16px; }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p { font-size: 0.9rem; line-height: 1.7; margin-top: 12px; }

.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: rgba(255,255,255,0.6); font-size: 0.85rem; transition: var(--transition); }
.footer-links a:hover { color: #FFFFFF; }

.footer-social { display: flex; gap: 12px; margin-top: 16px; }
.footer-social a {
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.6); font-size: 1rem;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}

/* ===== GENRE TILES ===== */
.genre-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.genre-tile {
  aspect-ratio: 3/4;
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: var(--transition-slow);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.genre-tile:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.genre-tile .genre-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  z-index: 1;
}

.genre-tile .genre-name-en {
  font-size: 0.75rem;
  color: var(--text-muted);
  z-index: 1;
}

/* ===== FEATURE CARDS ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(43,180,212,0.3);
}

.feature-card:hover::before { transform: scaleX(1); }

.feature-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius-md);
  background: #E1F9FF;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.feature-card h4 { margin-bottom: 8px; }
.feature-card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }

/* ===== PLAN CARDS ===== */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.plan-card {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.plan-card.featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-primary);
}

.plan-card.featured::before {
  content: 'ยอดนิยม';
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
}

.plan-card h3 { margin-bottom: 8px; }
.plan-card .plan-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 16px 0 4px;
}
.plan-card .plan-price span { font-size: 1rem; font-weight: 400; color: var(--text-muted); }
.plan-card .plan-desc { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 24px; }

.plan-features { list-style: none; text-align: left; margin-bottom: 24px; }
.plan-features li {
  padding: 8px 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.plan-features li i { color: var(--primary); font-size: 0.9rem; }

/* ===== AUDIO PLAYER (Dark Section) ===== */
.audio-section {
  background: var(--navy);
  padding: var(--space-3xl) 0;
  color: var(--text-on-dark);
}

.audio-player-card {
  background: var(--navy-light);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.audio-cover {
  width: 72px; height: 72px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

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

.audio-meta { flex: 1; min-width: 0; }
.audio-meta h5 { color: #fff; margin-bottom: 4px; }
.audio-meta p { color: rgba(255,255,255,0.5); font-size: 0.8rem; }

.audio-play-btn {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--primary);
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.audio-play-btn:hover { transform: scale(1.1); box-shadow: var(--shadow-primary); }

/* Waveform */
.waveform {
  display: flex;
  align-items: end;
  gap: 3px;
  height: 40px;
  padding: 0 16px;
}

.wave-bar {
  width: 4px;
  border-radius: 2px;
  background: rgba(255,255,255,0.3);
  transition: height 0.3s ease;
}

.wave-bar.active { background: var(--primary); }

/* ===== MINI PLAYER ===== */
.mini-player {
  position: fixed;
  bottom: 72px;
  left: 0; right: 0;
  z-index: 90;
  background: var(--navy);
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 10px 16px;
  display: none;
}

.mini-player .container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mini-player-cover {
  width: 42px; height: 42px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.mini-player-info { flex: 1; min-width: 0; }
.mini-player-info h6 { color: #fff; font-size: 0.8rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin: 0; }
.mini-player-info p { color: rgba(255,255,255,0.5); font-size: 0.65rem; margin: 0; }

.mini-player-controls { display: flex; align-items: center; gap: 12px; }
.mini-player-controls button {
  background: none; border: none; color: #fff; font-size: 1.2rem;
  cursor: pointer; transition: var(--transition);
}
.mini-player-controls button:hover { color: var(--primary); }

.mini-player-progress {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: rgba(255,255,255,0.1);
}

.mini-player-progress-bar {
  height: 100%;
  background: var(--primary);
  transition: width 0.3s linear;
}

/* ===== FULL PLAYER ===== */
.full-player {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--navy);
  display: none;
  flex-direction: column;
  overflow-y: auto;
}

.full-player.active { display: flex; }

.player-cover-large {
  width: 240px; height: 240px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 0 auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

/* ===== SEARCH ===== */
.search-bar {
  position: relative;
  max-width: 500px;
}

.search-bar input {
  width: 100%;
  padding: 14px 18px 14px 48px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--bg-input);
  font-size: 0.9rem;
  transition: var(--transition);
}

.search-bar input:focus {
  border-color: var(--primary);
  background: var(--bg-card);
  box-shadow: 0 0 0 3px rgba(43,180,212,0.1);
}

.search-bar i {
  position: absolute;
  left: 18px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

/* ===== HERO SECTION ===== */
.hero {
  padding: var(--space-3xl) 0;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-content .section-label { margin-bottom: 16px; }

.hero-content h1 {
  margin-bottom: 20px;
  color: var(--navy);
}

.hero-content p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.phone-mockup {
  width: 270px;
  height: 560px;
  border-radius: 40px;
  background: var(--navy);
  border: 4px solid #333;
  overflow: hidden;
  position: relative;
  box-shadow: 0 30px 80px rgba(0,0,0,0.3);
}

/* ===== SECTION SPACING ===== */
.section { padding: var(--space-3xl) 0; }
.section-compact { padding: var(--space-2xl) 0; }
.section-dark { background: var(--navy); color: var(--text-on-dark); }

/* Hide .top-header on desktop (site-header handles navigation) */
.top-header { display: none; }

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

/* ===== BOOK CARDS (Novel Cards) ===== */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  grid-auto-rows: 1fr;
  gap: 16px;
  overflow: hidden;
}

.book-card {
  cursor: pointer;
  transition: var(--transition-slow);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.book-card:hover { transform: translateY(-4px); }

.book-cover {
  aspect-ratio: 2/3;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 10px;
  position: relative;
  background: var(--bg-section);
  flex-shrink: 0;
}

.book-cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  display: block;
}

.book-card:hover .book-cover img { transform: scale(1.05); }

.book-cover .badge {
  position: absolute;
  top: 8px; left: 8px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.65rem;
  font-weight: 600;
}

.badge-new { background: var(--accent); color: #fff; }
.badge-trending { background: var(--primary); color: #fff; }
.badge-premium { background: #fbbf24; color: var(--navy); }

.book-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-height: 48px;
  overflow: hidden;
}

.book-title {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

.book-meta {
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.book-rating {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  color: #fbbf24;
  margin-top: auto;
}

/* ===== HORIZONTAL SCROLL RAIL ===== */
.rail-wrapper {
  position: relative;
}
.rail {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  gap: 16px;
  padding: 4px 0;
}
.rail::-webkit-scrollbar { display: none; }
.rail > .book-card {
  flex: 0 0 170px;
  width: 170px;
  scroll-snap-align: start;
}

.rail-arrow {
  position: absolute;
  top: 45%;
  transform: translateY(-50%);
  z-index: 10;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition);
}
.rail-arrow:hover {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
.rail-arrow-left { left: -16px; }
.rail-arrow-right { right: -16px; }

@media (max-width: 768px) {
  .rail {
    gap: 12px;
    padding: 4px var(--container-padding) 8px;
    margin: 0 calc(var(--container-padding) * -1);
    scroll-snap-type: x mandatory;
  }
  .rail > .book-card {
    flex: 0 0 140px;
    width: 140px;
  }
  .rail-arrow { display: none !important; }
}

/* ===== TABS ===== */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.tab {
  padding: 12px 20px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}

.tab:hover { color: var(--text-primary); }

.tab.active {
  color: var(--primary);
  font-weight: 600;
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state i { font-size: 3rem; margin-bottom: 16px; display: block; }
.empty-state h4 { color: var(--text-primary); margin-bottom: 8px; }

/* ===== LOADING ===== */
.splash-loader {
  display: flex;
  gap: 6px;
  justify-content: center;
  padding: 20px;
}

.splash-loader span {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--primary);
  animation: bounce 1.4s infinite ease-in-out;
}

.splash-loader span:nth-child(1) { animation-delay: -0.32s; }
.splash-loader span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

/* ===== TOGGLE SWITCH ===== */
.toggle-track {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
  background: #ccc;
  border-radius: 26px;
  cursor: pointer;
  transition: background 0.3s;
  flex-shrink: 0;
}

.toggle-track.on { background: var(--primary); }

.toggle-track::before {
  content: '';
  position: absolute;
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.3s;
}

.toggle-track.on::before { transform: translateX(22px); }

/* ===== MOBILE MENU DRAWER ===== */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(12px);
  padding: 24px;
  padding-top: 80px;
  overflow-y: auto;
}

.mobile-drawer.open { display: block; }

.mobile-drawer nav { display: flex; flex-direction: column; gap: 4px; }

.mobile-drawer a {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
}

.mobile-drawer a:hover { background: var(--bg-section); }

.mobile-drawer .drawer-divider {
  border-top: 1px solid var(--border);
  margin: 12px 0;
}

/* ===== TOAST ===== */
.toast-container {
  position: fixed;
  top: 84px; right: 16px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 0.3s ease;
  max-width: 360px;
}

.toast-success { border-left: 3px solid #22c55e; }
.toast-error { border-left: 3px solid #ef4444; }
.toast-info { border-left: 3px solid var(--primary); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ===== ACHIEVEMENT POPUP ===== */
.achievement-popup {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  z-index: 500;
  background: var(--bg-card);
  border: 2px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.achievement-popup.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  pointer-events: auto;
}

/* ===== KARAOKE WORD SYNC ===== */
.kword {
  display: inline;
  transition: color 0.15s ease, font-weight 0.15s ease, text-shadow 0.2s ease;
  cursor: default;
  border-radius: 3px;
  padding: 1px 2px;
  margin: 0 1px;
  color: rgba(255,255,255,0.4);
  font-weight: 400;
}

.kword.active {
  color: #fff !important;
  font-weight: 700;
  text-shadow: 0 0 12px rgba(43,180,212,0.6);
}

.kword.past {
  color: rgba(255,255,255,0.35);
  font-weight: 400;
}

.kword.future {
  color: rgba(255,255,255,0.15);
  font-weight: 400;
}

/* Karaoke Panel scrollbar */
#karaokePanel::-webkit-scrollbar { width: 4px; }
#karaokePanel::-webkit-scrollbar-track { background: transparent; }
#karaokePanel::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }

/* Admin Content Preview */
.content-preview {
  font-size: 0.75rem;
  color: var(--text-muted);
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.5;
}

.content-preview-full {
  display: none;
  font-size: 0.8rem;
  color: var(--text-primary);
  line-height: 1.7;
  max-height: 300px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
  padding: 12px;
  background: var(--bg-section);
  border-radius: 8px;
  margin-top: 8px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-content p { margin: 0 auto 32px; }
  .hero-cta { justify-content: center; }
  .hero-visual { display: none; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .plan-grid { grid-template-columns: 1fr 1fr; }
  .genre-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .site-header { height: 56px; }
  .site-header .header-nav { display: none; }
  .site-header .header-actions { display: none; }
  .site-header #mobileMenuBtn { display: flex !important; }
  .bottom-nav { display: block; }

  .top-header { display: flex; position: sticky; top: 0; z-index: 50; }

  .hero { padding: var(--space-2xl) 0; min-height: auto; }
  .section { padding: var(--space-2xl) 0; }

  .feature-grid { grid-template-columns: 1fr; }
  .plan-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .genre-grid { grid-template-columns: repeat(2, 1fr); }
  .book-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }

  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  .mini-player { bottom: 60px; }

  .detail-cover-row { flex-direction: column !important; align-items: center !important; text-align: center; }
  .detail-cover-row > div:first-child { width: 150px !important; }
  .detail-cover-row > div:last-child { text-align: left; }
  .detail-cover-row .detail-action-btns { justify-content: center; }

  .hero-stats { gap: 20px !important; flex-wrap: wrap; justify-content: center; }
  .profile-stats { gap: 24px !important; flex-wrap: wrap; }
}

@media (max-width: 480px) {
  :root { --container-padding: 16px; }
  .genre-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .book-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
}

@media (max-width: 360px) {
  :root { --container-padding: 12px; }
  .book-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .genre-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .plan-card { padding: 24px 16px; }
  .plan-card .plan-price { font-size: 2rem; }
  .btn-lg { padding: 12px 24px; font-size: 0.9rem; }
  .hero-stats { gap: 16px !important; }
  .profile-stats { gap: 16px !important; }
  .detail-cover-row > div:first-child { width: 120px !important; }
}

/* Player Menu Dropdown */
.player-menu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 16px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}
.player-menu-item:hover {
  background: var(--bg-section);
}
.player-menu-item i {
  font-size: 1rem;
  width: 20px;
  text-align: center;
  color: var(--text-secondary);
}
.player-menu-item span:first-of-type {
  flex: 1;
}
.player-menu-divider {
  height: 1px;
  background: var(--border);
  margin: 0;
}
.player-menu-toggle {
  width: 36px;
  height: 20px;
  border-radius: 10px;
  background: rgba(255,255,255,0.15);
  position: relative;
  transition: var(--transition);
  flex-shrink: 0;
}
.player-menu-toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  transition: var(--transition);
}
.player-menu-toggle.on {
  background: var(--primary);
}
.player-menu-toggle.on::after {
  left: 18px;
  background: #fff;
}
.player-menu-item.running {
  color: var(--primary);
}
.player-menu-item.running i {
  color: var(--primary);
}