/* common.css - KhmerPass Stripe 风格设计系统 v3 */
/* ================================================================ */

/* ── CSS Variables ── */
:root {
  --primary: #635BFF;
  --primary-dark: #0A2540;
  --primary-light: #7C73FF;
  --accent: #00D4FF;
  --accent-green: #059669;
  --success: #059669;
  --warning: #F59E0B;
  --danger: #EF4444;

  --bg: #F2F6F2;
  --bg-alt: #F8FBF8;
  --card-bg: #FCFDFC;

  --text: #1A1F36;
  --text-secondary: #4A5568;
  --text-muted: #8B9DAF;

  --border: #DCE5DE;
  --border-light: #EBF0EC;
  --border-focus: #635BFF;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.10), 0 8px 24px rgba(0,0,0,0.05);

  --radius: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --nav-h: 64px;
  --font: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans Khmer", "Leelawadee UI", sans-serif;
  --max-w: 1280px;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* ── Body ── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

/* Subtle dot grid background (护眼绿调) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: radial-gradient(circle, rgba(5,150,105,0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* Soft green ambient light — 右上角柔和绿光，缓解刺眼 */
body::after {
  content: "";
  position: fixed;
  top: -30%;
  right: -10%;
  width: 60%;
  height: 80%;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(ellipse at 70% 20%, rgba(5,150,105,0.025) 0%, transparent 70%);
}

/* ── Header / Nav ── */
header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(252,253,252,0.90);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
  height: var(--nav-h);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.logo svg { flex-shrink: 0; }

.logo-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.logo-text em {
  font-size: 10px;
  font-style: normal;
  color: var(--primary);
  letter-spacing: 2px;
  display: block;
  font-weight: 500;
  text-transform: uppercase;
}

.nav-word-count {
  font-size: 12px;
  color: var(--primary);
  font-weight: 500;
  white-space: nowrap;
  padding: 4px 10px;
  background: rgba(99,91,255,0.06);
  border-radius: 20px;
}

/* Nav Links */
.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.nav-links {
  display: flex;
  gap: 2px;
}

.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.nav-links a:hover {
  background: rgba(99,91,255,0.05);
  color: var(--primary);
}

.nav-links a.active {
  background: rgba(99,91,255,0.08);
  color: var(--primary);
  font-weight: 600;
}

/* Language Switch */
.lang-switch {
  display: flex;
  gap: 2px;
  padding: 3px;
  background: var(--border-light);
  border-radius: var(--radius);
  flex-shrink: 0;
}

.lang-switch a {
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition);
}

.lang-switch a:hover { color: var(--primary); }

.lang-switch a.active {
  background: var(--card-bg);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* Mobile nav button */
.nav-mobile-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 7px 12px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 18px;
  flex-shrink: 0;
  transition: all var(--transition);
}
.nav-mobile-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ── Cards (shared) ── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border);
  transform: translateY(-2px);
}

/* Word cards in grids */
.word-card, .word-item {
  display: block;
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--card-bg);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.word-card:hover, .word-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(99,91,255,0.25);
}

.word-card .cn, .word-item .cn {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.word-card .kh, .word-item .kh {
  font-size: 26px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 6px;
  line-height: 1.3;
}

.word-card .meta, .word-item .meta, .word-card .py {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  gap: 12px;
}

/* Category cards */
.cat-card {
  display: block;
  padding: 22px 24px;
  border-radius: var(--radius-md);
  background: var(--card-bg);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.cat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99,91,255,0.2);
}

.cat-card .icon { font-size: 36px; margin-bottom: 12px; }

.cat-card .name-cn {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.cat-card .name-kh {
  font-size: 14px;
  color: var(--text-secondary);
}

.cat-card.active {
  border-color: var(--primary);
  background: rgba(99,91,255,0.03);
  box-shadow: 0 0 0 3px rgba(99,91,255,0.08);
}

/* ── Search Components ── */
.search-box {
  display: flex;
  gap: 10px;
  max-width: 600px;
  margin: 0 auto;
}

.search-box input,
.search-bar input {
  flex: 1;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-size: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text);
  outline: none;
  transition: all var(--transition);
  font-family: var(--font);
}

.search-box input:focus,
.search-bar input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(99,91,255,0.08);
}

.search-box input::placeholder,
.search-bar input::placeholder {
  color: var(--text-muted);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  letter-spacing: -0.01em;
  font-family: var(--font);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(99,91,255,0.25);
}
.btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(99,91,255,0.35);
}

.btn-secondary {
  background: var(--card-bg);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
}
.btn-ghost:hover {
  background: rgba(99,91,255,0.04);
  color: var(--primary);
}

.btn-danger {
  background: rgba(239,68,68,0.06);
  color: var(--danger);
  border: 1px solid rgba(239,68,68,0.2);
}
.btn-danger:hover {
  background: rgba(239,68,68,0.12);
}

.btn-success {
  background: rgba(16,185,129,0.06);
  color: var(--success);
  border: 1px solid rgba(16,185,129,0.2);
}
.btn-success:hover {
  background: rgba(16,185,129,0.12);
}

.btn-sm { padding: 8px 16px; font-size: 13px; border-radius: 6px; }
.btn-lg { padding: 16px 32px; font-size: 17px; border-radius: var(--radius-md); }

/* ── Pronounce Buttons ── */
.pronounce-btn-card,
.pronounce-btn-cn {
  background: rgba(99,91,255,0.06);
  border: 1px solid rgba(99,91,255,0.15);
  border-radius: 6px;
  cursor: pointer;
  font-size: 16px;
  padding: 4px 8px;
  line-height: 1;
  transition: all var(--transition);
  color: var(--primary);
  flex-shrink: 0;
}
.pronounce-btn-card:hover,
.pronounce-btn-cn:hover {
  background: rgba(99,91,255,0.14);
  transform: scale(1.12);
}

.pron-size-small {
  padding: 3px 6px;
  font-size: 13px;
}

/* ── Footer ── */
footer {
  text-align: center;
  padding: 32px;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
  margin-top: 80px;
  position: relative;
  z-index: 1;
}

.friend-links {
  margin-bottom: 10px;
  font-size: 13px;
  color: var(--text-secondary);
}
.friend-links a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition);
}
.friend-links a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* ── Page Fade-in ── */
@keyframes pageIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.search-hero, .categories, .recommended,
.word-detail, .search-bar, .results,
.main, .learn-container, .quiz-wrap, .fav-wrap, .pho-wrap,
.page, .quiz-wrap {
  animation: pageIn 0.35s ease both;
}

/* ── Pulse animation ── */
@keyframes pn-pulse {
  from { box-shadow: 0 0 4px rgba(99,91,255,0.15); }
  to   { box-shadow: 0 0 18px rgba(99,91,255,0.4); }
}

/* ── Gradients (Stripe style) ── */
.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
}

/* ── Badge / Tag ── */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-primary {
  background: rgba(99,91,255,0.08);
  color: var(--primary);
}
.badge-success {
  background: rgba(16,185,129,0.08);
  color: var(--success);
}
.badge-warning {
  background: rgba(245,158,11,0.08);
  color: var(--warning);
}
.badge-danger {
  background: rgba(239,68,68,0.08);
  color: var(--danger);
}
.badge-accent-green {
  background: rgba(5,150,105,0.08);
  color: var(--accent-green);
}

/* ── Utility ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }

/* ── Section Titles ── */
.section-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.page-heading {
  font-size: 40px;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  line-height: 1.2;
}

.page-heading-gradient {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 60%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-muted);
}
.empty-state .icon { font-size: 56px; margin-bottom: 16px; }
.empty-state h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.empty-state p { font-size: 14px; }
.empty-state a { color: var(--primary); text-decoration: none; font-weight: 500; }
.empty-state a:hover { text-decoration: underline; }

.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 16px;
}

/* ── Progress Bar ── */
.progress-bar {
  height: 6px;
  background: var(--border-light);
  border-radius: 3px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 3px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Word Grid Layout ── */
.word-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

/* ── Cat Grid ── */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}

/* ── Search Bar ── */
.search-bar {
  max-width: var(--max-w);
  margin: 32px auto;
  padding: 0 24px;
  display: flex;
  gap: 10px;
}
.search-bar form { display: flex; gap: 10px; flex: 1; }

/* ── Results ── */
.results {
  max-width: var(--max-w);
  margin: 20px auto 60px;
  padding: 0 24px;
}
.results h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-secondary);
}
.results h2 span { color: var(--primary); font-weight: 700; }

/* ── Links ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
  color: var(--primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
}
.back-link:hover { color: var(--primary-dark); }

/* ── Tabs ── */
.tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 9px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}
.tab-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.tab-btn.active {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(99,91,255,0.04);
  font-weight: 600;
}

/* ── Difficulty Badges ── */
.difficulty {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-top: 8px;
}
.difficulty.简单, .difficulty.ងាយ {
  background: rgba(16,185,129,0.08);
  color: var(--success);
}
.difficulty.中等, .difficulty.មធ្យម {
  background: rgba(245,158,11,0.08);
  color: var(--warning);
}
.difficulty.困难, .difficulty.ពិបាក {
  background: rgba(239,68,68,0.08);
  color: var(--danger);
}

/* ── Highlight text ── */
.highlight { color: var(--primary); font-weight: 600; }
.pink { color: #EC4899; font-weight: 600; }
.yellow { color: var(--warning); font-weight: 600; }
.green { color: var(--accent-green); font-weight: 600; }

/* Green-accented section background — 柔和绿底区块 */
.bg-soft-green {
  background: linear-gradient(135deg, rgba(5,150,105,0.03), rgba(5,150,105,0.01));
  border-radius: var(--radius-lg);
  padding: 28px;
}

/* ── Audio Card (word page) ── */
.audio-card {
  background: linear-gradient(135deg, rgba(99,91,255,0.02), rgba(0,212,255,0.02));
  border: 1px solid rgba(99,91,255,0.1);
  border-radius: var(--radius-lg);
  padding: 22px;
  margin-top: 16px;
  transition: all 0.3s ease;
}
.audio-card::before {
  content: "";
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(99,91,255,0.03) 0%, transparent 50%);
  pointer-events: none;
}
.audio-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.play-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 2px 12px rgba(99,91,255,0.25);
  letter-spacing: -0.01em;
  font-family: var(--font);
}
.play-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(99,91,255,0.4);
}
.play-btn:active { transform: scale(0.97); }
.play-btn.is-playing {
  animation: btn-glow 0.8s ease-in-out infinite alternate;
}
.play-icon { font-size: 16px; transition: transform 0.2s; }

@keyframes btn-glow {
  from { box-shadow: 0 2px 12px rgba(99,91,255,0.25); }
  to   { box-shadow: 0 4px 30px rgba(99,91,255,0.55), 0 0 50px rgba(0,212,255,0.2); }
}

.audio-wave {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 28px;
  opacity: 0;
  transition: opacity 0.3s;
}
.audio-wave.active { opacity: 1; }
.audio-wave span {
  display: block;
  width: 3px;
  background: var(--primary);
  border-radius: 2px;
  animation: none;
}
.audio-wave.active span { animation: wave-bar 0.8s ease-in-out infinite alternate; }
.audio-wave.active span:nth-child(1) { height: 12px; animation-delay: 0s; }
.audio-wave.active span:nth-child(2) { height: 20px; animation-delay: 0.15s; }
.audio-wave.active span:nth-child(3) { height: 28px; animation-delay: 0.3s; }
.audio-wave.active span:nth-child(4) { height: 18px; animation-delay: 0.45s; }
.audio-wave.active span:nth-child(5) { height: 10px; animation-delay: 0.6s; }

@keyframes wave-bar {
  from { transform: scaleY(0.4); opacity: 0.5; }
  to   { transform: scaleY(1);   opacity: 1; }
}

.audio-source {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-light);
  flex-wrap: wrap;
}
.source-label {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.source-selector {
  display: flex;
  gap: 2px;
  padding: 3px;
  background: var(--border-light);
  border-radius: 8px;
}
.source-selector button {
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  font-family: var(--font);
}
.source-selector button:hover {
  color: var(--primary);
}
.source-selector button.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 2px 8px rgba(99,91,255,0.25);
}
.pron-status {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 4px;
  min-width: 40px;
}

/* ── Pronounce button (big variant for word page) ── */
.pronounce-btn-big {
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 600;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font);
  box-shadow: 0 2px 12px rgba(99,91,255,0.25);
}
.pronounce-btn-big:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(99,91,255,0.4);
}

/* ── Favorite button data attr ── */
[data-fav-btn] {
  font-size: 24px;
  background: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-muted);
}
[data-fav-btn]:hover { color: var(--warning); transform: scale(1.15); }

/* ── Mobile Responsive ── */
@media (max-width: 900px) {
  .nav-mobile-btn { display: block; }
  .nav-right { margin-left: 0; }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(252,253,252,0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 10px 20px;
    gap: 2px;
    z-index: 199;
    box-shadow: var(--shadow-lg);
  }

  .nav-links.open { display: flex; }

  .nav-links a {
    padding: 12px 16px;
    font-size: 15px;
    border-radius: var(--radius);
  }

  header { padding: 0 16px; }

  .page-heading, .page-heading-gradient { font-size: 32px; }

  .word-grid { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
}

/* ── Admin: Buttons ── */
.btn { display:inline-flex; align-items:center; gap:6px; padding:8px 18px; border-radius:8px;
  font-size:13px; font-weight:500; text-decoration:none; cursor:pointer; border:none; transition:.2s; }
.btn-primary { background:var(--primary, #635BFF); color:#fff; }
.btn-primary:hover { background:var(--primary-dark, #0A2540); }
.btn-secondary { background:#E5E7EB; color:#374151; }
.btn-secondary:hover { background:#D1D5DB; }
.btn-ghost { background:transparent; color:var(--text-secondary); }
.btn-ghost:hover { background:rgba(0,0,0,.05); }
.btn-success { background:var(--success, #059669); color:#fff; }
.btn-success:hover { filter:brightness(.9); }
.btn-danger { background:var(--danger, #EF4444); color:#fff; }
.btn-danger:hover { filter:brightness(.9); }
.btn-sm { padding:5px 12px; font-size:12px; }
.btn-login { width:100%; padding:12px; font-size:15px; justify-content:center; }

/* ── Admin: Cards & Stats ── */
.stat-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:16px; margin-bottom:24px; }
.stat-card { background:#fff; border-radius:12px; padding:20px 24px; box-shadow:var(--shadow);
  border-left:4px solid transparent; display:flex; flex-direction:column; gap:4px; }
.stat-card.stat-blue { border-color:#3B82F6; }
.stat-card.stat-green { border-color:#10B981; }
.stat-card.stat-orange { border-color:#F59E0B; }
.stat-card.stat-purple { border-color:#8B5CF6; }
.s-icon { font-size:24px; }
.s-num { font-size:28px; font-weight:700; color:var(--text); }
.s-label { font-size:13px; color:var(--text-muted); }

/* ── Admin: Header & Breadcrumb ── */
.adm-header { display:flex; justify-content:space-between; align-items:center; margin-bottom:24px; flex-wrap:wrap; gap:12px; }
.adm-header h1 { font-size:22px; margin:0; }
.adm-header-left { display:flex; flex-direction:column; gap:4px; }
.breadcrumb { font-size:13px; color:var(--text-muted); }

/* ── Admin: Toolbar ── */
.adm-toolbar { display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.adm-toolbar input, .adm-toolbar select { padding:7px 12px; border:1px solid var(--border); border-radius:6px;
  font-size:13px; background:var(--bg); }

/* ── Admin: Tables ── */
.dtable-wrap { background:#fff; border-radius:12px; box-shadow:var(--shadow); padding:0; margin-bottom:24px; }
.dtable-head { display:flex; justify-content:space-between; align-items:center;
  padding:16px 20px; border-bottom:1px solid var(--border-light); }
.dtable-head h3 { margin:0; font-size:16px; }
.dtable-wrap table { width:100%; border-collapse:collapse; }
.dtable-wrap thead th { text-align:left; padding:10px 16px; font-size:12px; font-weight:600;
  color:var(--text-muted); text-transform:uppercase; border-bottom:1px solid var(--border-light); }
.dtable-wrap tbody td { padding:10px 16px; font-size:13px; border-bottom:1px solid var(--border-light); }
.dtable-wrap tbody tr:hover { background:var(--bg-alt); }
.td-sm { width:80px; color:var(--text-muted); }
.td-cn { font-weight:500; }
.td-kh { font-family:'Khmer OS',system-ui; font-size:15px; }

/* ── Admin: Badges ── */
.badge { display:inline-block; padding:2px 10px; border-radius:12px; font-size:11px; font-weight:500; }
.badge-success { background:#D1FAE5; color:#065F46; }
.badge-warning { background:#FEF3C7; color:#92400E; }
.badge-danger { background:#FEE2E2; color:#991B1B; }

/* ── Admin: Forms ── */
.form-card { background:#fff; border-radius:12px; box-shadow:var(--shadow); padding:24px; margin-bottom:24px; }
.form-card h2 { margin:0 0 20px; font-size:18px; }
.form-group { margin-bottom:16px; }
.form-group label { display:block; font-size:13px; font-weight:500; color:var(--text-secondary); margin-bottom:6px; }
.form-group input, .form-group select, .form-group textarea {
  width:100%; padding:8px 12px; border:1px solid var(--border); border-radius:6px;
  font-size:14px; box-sizing:border-box; background:var(--bg); }
.form-group textarea { min-height:80px; resize:vertical; }
.form-row { display:flex; gap:16px; }
.form-col { flex:1; }
.form-full { width:100%; }
.form-actions { display:flex; gap:10px; margin-top:20px; justify-content:flex-end; }
.action-btns { display:flex; gap:6px; }

/* ── Admin: Flash Messages ── */
.flash { padding:12px 20px; border-radius:8px; margin-bottom:16px; font-size:14px; }
.flash-ok { background:#D1FAE5; color:#065F46; }
.flash-err { background:#FEE2E2; color:#991B1B; }

/* ── Admin: Pagination ── */
.pagination { display:flex; justify-content:center; gap:6px; padding:16px 0; }
.pagination a, .pagination span { padding:6px 12px; border-radius:6px; font-size:13px;
  text-decoration:none; border:1px solid var(--border); color:var(--text-secondary); }
.pagination a:hover { background:var(--primary); color:#fff; border-color:var(--primary); }

/* ── Admin: Category Table ── */
.cat-row { display:flex; align-items:center; gap:10px; padding:8px 0; border-bottom:1px solid var(--border-light); }
.cat-id { color:var(--text-muted); font-size:12px; width:40px; }
.cat-cn { font-weight:500; flex:1; }
.cat-kh { color:var(--text-secondary); flex:1; }

/* ── Admin Sidebar ── */
body.adm-pg { display: flex; min-height: 100vh; margin: 0; }
body.adm-pg .adm-sidebar {
  width: 200px; min-width: 200px;
  background: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
  padding: 20px 0; box-sizing: border-box;
}
body.adm-pg .adm-sidebar a {
  display: block; padding: 10px 24px; color: #ccd; text-decoration: none;
  font-size: 14px; transition: .2s;
}
body.adm-pg .adm-sidebar a:hover { background: rgba(255,255,255,.08); color: #fff; }
body.adm-pg .adm-sidebar a.active { background: rgba(99,102,241,.25); color: #a5b4fc; border-right: 3px solid #818cf8; }
body.adm-pg .adm-sidebar hr { margin: 12px 0; border: none; border-top: 1px solid rgba(255,255,255,.1); }
.adm-main { flex: 1; min-width: 0; padding: 0 24px 40px; overflow-x: auto; }

@media (max-width: 600px) {
  body.adm-pg .adm-sidebar { width: 60px; min-width: 60px; }
  body.adm-pg .adm-sidebar a { padding: 12px 8px; font-size: 16px; text-align: center; }
}