/* ═══════════════════════════════════════════════
   66书吧 · Global Styles · v3.0
   Aesthetic: Warm Vintage Library · Parchment & Amber
═══════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700;800;900&family=Lora:wght@400;500;600;700&family=Source+Serif+4:wght@300;400;500;600;700&family=Noto+Serif+SC:wght@400;500;700&display=swap');

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

/* ─── Light Mode Variables (Default) ─── */
:root {
  /* ── Core Palette ── */
  --bg:        #FAF6EF;
  --bg2:       #F5EDE0;
  --bg3:       #EDE0CE;

  /* Cards */
  --card:      #FFFFFF;
  --card2:     #FDF8F2;

  /* Glass */
  --glass:     rgba(255,255,255,0.75);
  --glass2:    rgba(250,246,239,0.94);
  --glass3:    rgba(245,237,224,0.65);

  /* Borders */
  --border:    rgba(139,94,60,0.18);
  --border2:   rgba(196,134,42,0.28);
  --border3:   rgba(139,94,60,0.08);

  /* Accent — Amber Gold */
  --accent:    #C4862A;
  --accent2:   #A06828;
  --accent3:   #8B4513;
  --accent4:   #D4A020;
  --accent-glow: rgba(196,134,42,0.28);

  /* Status */
  --danger:    #C0392B;
  --danger2:   rgba(192,57,43,0.12);
  --success:   #27AE60;
  --success2:  rgba(39,174,96,0.12);
  --warn:      #D4A020;
  --warn2:     rgba(212,160,32,0.14);
  --info:      #2980B9;

  /* Text */
  --text:      #2C1810;
  --text2:     #4A2E1A;
  --muted:     #8B7355;
  --muted2:    #A0907A;

  /* Radius */
  --r:        18px;
  --r-sm:     12px;
  --r-xs:     8px;
  --r-pill:   50px;

  /* Shadow */
  --shadow:    0 4px 20px rgba(80,40,10,0.12);
  --shadow-lg: 0 16px 48px rgba(80,40,10,0.18);
  --glow:      0 0 24px rgba(196,134,42,0.22);
  --glow-sm:   0 0 12px rgba(196,134,42,0.16);

  /* Transition */
  --t: 0.22s cubic-bezier(.4,0,.2,1);
}

/* ─── Dark Mode Variables ─── */
@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #180E08;
    --bg2:       #211408;
    --bg3:       #2A1A0E;

    --card:      #261408;
    --card2:     #301A0C;

    --glass:     rgba(38,20,8,0.78);
    --glass2:    rgba(24,14,8,0.94);
    --glass3:    rgba(48,30,14,0.65);

    --border:    rgba(196,134,42,0.18);
    --border2:   rgba(220,160,60,0.28);
    --border3:   rgba(196,134,42,0.08);

    --accent:    #D4962A;
    --accent2:   #E8A830;
    --accent3:   #F0C060;
    --accent4:   #F8DC88;
    --accent-glow: rgba(212,150,42,0.30);

    --danger:    #E05540;
    --danger2:   rgba(224,85,64,0.14);
    --success:   #4CAF70;
    --success2:  rgba(76,175,112,0.14);
    --warn:      #F0C040;
    --warn2:     rgba(240,192,64,0.14);
    --info:      #5BADE8;

    --text:      #F0E6D0;
    --text2:     #DDD0B8;
    --muted:     #A09070;
    --muted2:    #78685A;

    --shadow:    0 4px 24px rgba(0,0,0,0.50);
    --shadow-lg: 0 16px 56px rgba(0,0,0,0.60);
    --glow:      0 0 28px rgba(212,150,42,0.28);
    --glow-sm:   0 0 14px rgba(212,150,42,0.20);
  }
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 5px; height: 5px }
::-webkit-scrollbar-track { background: var(--bg2) }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 10px }
::-webkit-scrollbar-thumb:hover { background: var(--accent) }

/* ─── Base ─── */
html { scroll-behavior: smooth }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Source Serif 4', 'Noto Serif SC', Georgia, serif;
  min-height: 100vh;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  transition: background var(--t), color var(--t);
}

/* Ambient paper texture background */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 80% 60% at 15% 15%, rgba(196,134,42,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 85% 85%, rgba(139,94,60,0.05) 0%, transparent 55%),
    radial-gradient(ellipse 40% 40% at 50% 50%, rgba(212,160,32,0.03) 0%, transparent 60%);
}

/* Subtle grain texture */
body::after {
  content: '';
  position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* ─── Typography ─── */
h1,h2,h3,h4 {
  font-family: 'Playfair Display', 'Noto Serif SC', Georgia, serif;
  line-height: 1.3;
}

/* ─── Navbar ─── */
.navbar {
  position: sticky; top: 0; z-index: 200;
  background: var(--glass2);
  backdrop-filter: blur(28px) saturate(180%);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
}

@media (prefers-color-scheme: dark) {
  .navbar {
    background: rgba(24,14,8,0.96);
    border-bottom-color: rgba(196,134,42,0.22);
  }
}

.navbar-inner {
  max-width: 1200px; margin: 0 auto;
  height: 60px; display: flex; align-items: center; gap: 14px;
}

.navbar-brand {
  font-size: 1.2rem; font-weight: 800;
  font-family: 'Playfair Display', serif;
  color: var(--accent3);
  text-decoration: none; flex-shrink: 0; letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 9px;
  transition: color var(--t);
}
.navbar-brand:hover { color: var(--accent) }
.navbar-brand .brand-icon {
  width: 32px; height: 32px; border-radius: 8px;
  overflow: hidden; flex-shrink: 0;
  border: 1.5px solid var(--border2);
  box-shadow: 0 2px 8px rgba(139,69,19,0.25);
}
.navbar-brand .brand-icon img {
  width: 100%; height: 100%; object-fit: cover;
}

.navbar-search {
  flex: 1; max-width: 420px; position: relative;
}
.navbar-search input {
  width: 100%;
  background: rgba(196,134,42,0.06);
  border: 1.5px solid var(--border);
  border-radius: var(--r-pill);
  padding: 8px 42px 8px 18px;
  color: var(--text); font-size: 0.88rem; outline: none;
  transition: var(--t);
  font-family: 'Source Serif 4', 'Noto Serif SC', serif;
}
.navbar-search input::placeholder { color: var(--muted2) }
.navbar-search input:focus {
  border-color: var(--accent);
  background: rgba(196,134,42,0.10);
  box-shadow: 0 0 0 3px rgba(196,134,42,0.10);
}
.navbar-search button {
  position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer;
  color: var(--muted); font-size: 0.9rem; transition: color var(--t);
}
.navbar-search button:hover { color: var(--accent) }

.navbar-actions { margin-left: auto; display: flex; align-items: center; gap: 8px }

.btn-icon {
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(196,134,42,0.07);
  border: 1.5px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text2); text-decoration: none;
  font-size: 0.88rem; transition: var(--t); flex-shrink: 0;
}
.btn-icon:hover {
  background: rgba(196,134,42,0.16);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--glow-sm);
  transform: translateY(-1px);
}

/* ─── Container ─── */
.container {
  max-width: 1200px; margin: 0 auto;
  padding: 26px 18px 100px;
  position: relative; z-index: 1;
}

/* ─── Cards ─── */
.card {
  background: var(--glass);
  backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 24px;
  transition: border-color var(--t), box-shadow var(--t), transform var(--t);
  position: relative; overflow: hidden;
}
.card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(196,134,42,0.5), transparent);
  opacity: 0; transition: opacity var(--t);
}
.card:hover {
  border-color: var(--border2);
  box-shadow: var(--shadow), var(--glow);
}
.card:hover::before { opacity: 1 }

.glass-card {
  background: var(--glass3);
  backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: var(--r);
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 10px 22px;
  border: none; border-radius: var(--r-sm);
  font-size: 0.9rem; font-weight: 600;
  cursor: pointer; transition: all var(--t);
  text-decoration: none; white-space: nowrap;
  font-family: 'Source Serif 4', 'Noto Serif SC', serif;
  position: relative; overflow: hidden;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  color: #fff;
  box-shadow: 0 4px 16px rgba(196,134,42,0.32);
}
.btn-primary::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0; transition: opacity var(--t);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(196,134,42,0.45);
}
.btn-primary:hover::before { opacity: 1 }
.btn-primary:active { transform: translateY(0) }

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text2);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent3);
  background: rgba(196,134,42,0.07);
  box-shadow: 0 0 0 3px rgba(196,134,42,0.07);
}

.btn-ghost {
  background: rgba(196,134,42,0.07);
  border: 1px solid transparent;
  color: var(--accent3);
}
.btn-ghost:hover { background: rgba(196,134,42,0.14); border-color: var(--border) }

.btn-danger {
  background: var(--danger2);
  border: 1.5px solid rgba(192,57,43,0.28);
  color: var(--danger);
}
.btn-danger:hover { background: rgba(192,57,43,0.22); box-shadow: 0 0 12px rgba(192,57,43,0.18) }

.btn-success {
  background: var(--success2);
  border: 1.5px solid rgba(39,174,96,0.28);
  color: var(--success);
}

.btn-sm { padding: 6px 14px; font-size: 0.8rem; border-radius: 8px }
.btn-xs { padding: 4px 10px; font-size: 0.75rem; border-radius: 6px }
.btn-block { width: 100%; display: flex }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; box-shadow: none !important }

/* ─── Forms ─── */
.form-group { margin-bottom: 16px }
.form-group label {
  display: block; font-size: 0.8rem; font-weight: 600;
  color: var(--muted); margin-bottom: 7px; letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: 'Source Serif 4', serif;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(196,134,42,0.04);
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  padding: 11px 16px;
  color: var(--text); font-size: 0.92rem; outline: none;
  transition: var(--t);
  font-family: 'Source Serif 4', 'Noto Serif SC', serif;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  background: rgba(196,134,42,0.08);
  box-shadow: 0 0 0 3px rgba(196,134,42,0.10);
}
.form-group input::placeholder { color: var(--muted2) }
.form-group select option { background: var(--card2); color: var(--text) }

/* ─── Alerts ─── */
.alert {
  padding: 12px 16px; border-radius: var(--r-sm);
  margin-bottom: 16px; font-size: 0.88rem;
  display: flex; align-items: center; gap: 10px;
  animation: alertIn 0.25s ease;
}
@keyframes alertIn { from { opacity:0; transform:translateY(-6px) } to { opacity:1; transform:none } }
.alert-error   { background: var(--danger2); border: 1px solid rgba(192,57,43,0.28); color: var(--danger) }
.alert-success { background: var(--success2); border: 1px solid rgba(39,174,96,0.28); color: var(--success) }
.alert-info    { background: rgba(196,134,42,0.09); border: 1px solid var(--border2); color: var(--accent3) }
.alert-warn    { background: var(--warn2); border: 1px solid rgba(212,160,32,0.28); color: var(--warn) }

/* ─── Badges ─── */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: 20px;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em;
  font-family: 'Source Serif 4', serif;
}
.badge-vip {
  background: linear-gradient(135deg, rgba(212,160,32,0.18), rgba(196,134,42,0.12));
  border: 1px solid rgba(212,160,32,0.38); color: var(--warn);
}
.badge-free { background: var(--glass3); border: 1px solid var(--border); color: var(--muted) }
.badge-admin { background: rgba(139,69,19,0.12); border: 1px solid var(--border2); color: var(--accent3) }
.badge-success { background: var(--success2); border: 1px solid rgba(39,174,96,0.28); color: var(--success) }
.badge-danger { background: var(--danger2); border: 1px solid rgba(192,57,43,0.28); color: var(--danger) }

/* ─── Book Grid ─── */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 18px;
}

.book-item { cursor: pointer; text-decoration: none; color: inherit; display: block }

.book-cover {
  aspect-ratio: 3/4;
  border-radius: var(--r-sm);
  overflow: hidden;
  background: linear-gradient(135deg, var(--card2), rgba(196,134,42,0.18));
  border: 1px solid var(--border);
  margin-bottom: 10px;
  position: relative;
  transition: var(--t);
  box-shadow: 2px 4px 12px rgba(80,40,10,0.12);
}
.book-item:hover .book-cover {
  transform: translateY(-5px) scale(1.02);
  border-color: var(--accent);
  box-shadow: 4px 12px 32px rgba(80,40,10,0.22), var(--glow-sm);
}
.book-cover img { width: 100%; height: 100%; object-fit: cover }
.book-cover-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.2rem; color: var(--muted);
}
.book-cover::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(44,24,16,0.45) 0%, transparent 55%);
  opacity: 0; transition: opacity var(--t);
}
.book-item:hover .book-cover::after { opacity: 1 }

.book-title {
  font-size: 0.85rem; font-weight: 600; margin-bottom: 3px;
  line-height: 1.45;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  transition: color var(--t);
  font-family: 'Source Serif 4', 'Noto Serif SC', serif;
}
.book-item:hover .book-title { color: var(--accent3) }
.book-author { font-size: 0.74rem; color: var(--muted) }

/* ─── Spinner ─── */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid rgba(196,134,42,0.18);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.75s cubic-bezier(0.6,0.2,0.4,0.8) infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg) } }

.loading-center {
  display: flex; justify-content: center; align-items: center;
  padding: 56px; color: var(--muted); gap: 12px;
}
.loading-center .spinner { width: 28px; height: 28px; border-width: 2.5px }

/* ─── Tab Bar ─── */
.tab-bar {
  display: flex; gap: 4px;
  margin-bottom: 20px;
  background: rgba(196,134,42,0.05);
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  padding: 4px;
}
.tab {
  flex: 1; text-align: center; padding: 8px 12px;
  border-radius: 8px; cursor: pointer;
  font-size: 0.86rem; color: var(--muted); transition: var(--t);
  font-weight: 600;
  font-family: 'Source Serif 4', serif;
}
.tab.active {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; box-shadow: 0 4px 12px rgba(196,134,42,0.32);
}

/* ─── Empty State ─── */
.empty { text-align: center; padding: 56px 20px; color: var(--muted) }
.empty-icon { font-size: 3rem; margin-bottom: 14px; opacity: 0.5 }
.empty p { font-size: 0.95rem; margin-bottom: 20px }

/* ─── Table ─── */
.table { width: 100%; border-collapse: collapse; font-size: 0.87rem }
.table th {
  text-align: left; padding: 12px 14px;
  color: var(--muted); font-weight: 700;
  border-bottom: 1.5px solid var(--border); font-size: 0.78rem;
  text-transform: uppercase; letter-spacing: 0.05em;
  font-family: 'Source Serif 4', serif;
  background: rgba(196,134,42,0.04);
}
.table td { padding: 12px 14px; border-bottom: 1px solid rgba(196,134,42,0.08) }
.table tbody tr { transition: background var(--t) }
.table tbody tr:hover td { background: rgba(196,134,42,0.05) }
.table tbody tr:last-child td { border-bottom: none }

/* ─── Pagination ─── */
.pagination { display: flex; gap: 6px; justify-content: center; margin-top: 24px; flex-wrap: wrap }
.page-btn {
  min-width: 36px; height: 36px; padding: 0 10px;
  border-radius: var(--r-xs);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  border: 1.5px solid var(--border);
  background: transparent; color: var(--text2);
  font-size: 0.85rem; transition: var(--t);
  font-family: 'Source Serif 4', serif;
}
.page-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: var(--accent); color: #fff;
  box-shadow: 0 4px 12px rgba(196,134,42,0.35);
}
.page-btn:hover:not(.active) { border-color: var(--accent); color: var(--accent3) }

/* ─── Toast ─── */
#toast {
  position: fixed; bottom: 86px; left: 50%; transform: translateX(-50%) translateY(8px);
  background: var(--glass2);
  backdrop-filter: blur(20px);
  border: 1.5px solid var(--border2);
  border-radius: var(--r-sm);
  padding: 11px 22px;
  font-size: 0.88rem; z-index: 9999;
  opacity: 0; pointer-events: none;
  white-space: nowrap; max-width: 90vw; text-align: center;
  transition: opacity 0.25s, transform 0.25s;
  box-shadow: var(--shadow), var(--glow-sm);
  font-family: 'Source Serif 4', serif;
}
#toast.show {
  opacity: 1; transform: translateX(-50%) translateY(0);
}

/* ─── VIP Lock ─── */
.vip-lock {
  text-align: center; padding: 52px 24px;
  background: var(--glass);
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  backdrop-filter: blur(16px);
}
.vip-lock .lock-icon {
  width: 70px; height: 70px; border-radius: 50%;
  background: linear-gradient(135deg, rgba(212,160,32,0.18), rgba(196,134,42,0.12));
  border: 2px solid rgba(212,160,32,0.35);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px; font-size: 1.8rem; color: var(--warn);
}
.vip-lock h2 { font-size: 1.3rem; margin-bottom: 10px; font-family: 'Playfair Display', serif }
.vip-lock p { color: var(--muted); margin-bottom: 22px; font-size: 0.93rem }

/* ─── Mobile Bottom Nav ─── */
.bottom-nav {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 200;
  background: var(--glass2);
  backdrop-filter: blur(28px) saturate(180%);
  border-top: 1.5px solid var(--border);
  padding: 8px 0 env(safe-area-inset-bottom,0);
}
.bottom-nav a {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  gap: 3px; text-decoration: none; color: var(--muted);
  font-size: 0.62rem; font-weight: 500; transition: var(--t); padding: 4px 6px;
  font-family: 'Source Serif 4', serif;
}
.bottom-nav a .icon { font-size: 1.15rem; transition: transform var(--t) }
.bottom-nav a.active, .bottom-nav a:hover { color: var(--accent3) }
.bottom-nav a.active .icon { transform: translateY(-2px) }

/* ─── Page Title ─── */
.page-title {
  font-size: 1.45rem; font-weight: 800; margin-bottom: 22px;
  color: var(--accent3);
  font-family: 'Playfair Display', serif;
  letter-spacing: -0.01em;
}

/* ─── Section Header ─── */
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px;
}
.section-title {
  font-size: 1.05rem; font-weight: 700;
  display: flex; align-items: center; gap: 10px;
  font-family: 'Playfair Display', serif;
}
.section-title::before {
  content: '';
  width: 3px; height: 18px;
  background: linear-gradient(to bottom, var(--accent), var(--accent2));
  border-radius: 2px; flex-shrink: 0;
}

/* ─── Divider ─── */
.divider { height: 1px; background: var(--border); margin: 22px 0 }

/* ─── Ornamental Divider ─── */
.ornament-divider {
  display: flex; align-items: center; gap: 12px;
  margin: 20px 0; color: var(--muted2); font-size: 0.88rem;
}
.ornament-divider::before,
.ornament-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}

/* ─── User Avatar ─── */
.avatar {
  border-radius: 50%; object-fit: cover;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; border: 2px solid var(--border2); overflow: hidden;
}

/* ─── Stat Card ─── */
.stat-card {
  background: var(--glass);
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  padding: 20px;
  text-align: center;
  transition: var(--t);
  position: relative; overflow: hidden;
}
.stat-card::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transform: scaleX(0); transition: transform var(--t); transform-origin: left;
}
.stat-card:hover::after { transform: scaleX(1) }
.stat-value {
  font-size: 2rem; font-weight: 800;
  color: var(--accent3);
  font-family: 'Playfair Display', serif;
  line-height: 1;
}
.stat-label { font-size: 0.78rem; color: var(--muted); margin-top: 6px; font-weight: 500 }

/* ─── Modal ─── */
.modal {
  display: none; position: fixed; inset: 0; z-index: 500;
  background: rgba(44,24,16,0.72);
  backdrop-filter: blur(8px);
  align-items: center; justify-content: center; padding: 20px;
}
.modal.show { display: flex; animation: modalIn 0.25s ease }
@keyframes modalIn { from { opacity:0 } to { opacity:1 } }

.modal-box {
  background: var(--card2);
  border: 1.5px solid var(--border2);
  border-radius: var(--r);
  padding: 28px; width: 100%; max-width: 500px;
  box-shadow: var(--shadow-lg);
  animation: boxIn 0.28s cubic-bezier(0.34,1.56,0.64,1);
  position: relative;
}
@keyframes boxIn { from { transform: scale(0.9) translateY(10px); opacity:0 } to { transform:none; opacity:1 } }
.modal-title {
  font-size: 1.1rem; font-weight: 700; margin-bottom: 22px;
  color: var(--accent3);
  font-family: 'Playfair Display', serif;
}
.modal-actions { display: flex; gap: 10px; margin-top: 22px; justify-content: flex-end }

/* ─── Tag Chips ─── */
.chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 12px; border-radius: 20px;
  font-size: 0.73rem; font-weight: 500;
  background: rgba(196,134,42,0.09);
  border: 1px solid var(--border);
  color: var(--accent3);
  transition: var(--t);
  font-family: 'Source Serif 4', serif;
}
.chip:hover { background: rgba(196,134,42,0.18); border-color: var(--accent) }

/* ─── Progress Bar ─── */
.progress-bar {
  height: 4px; border-radius: 4px;
  background: rgba(196,134,42,0.12);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent4));
  border-radius: 4px; transition: width 0.6s ease;
}

/* ─── Auth Card ─── */
.auth-card {
  background: var(--glass);
  backdrop-filter: blur(28px) saturate(180%);
  border: 1.5px solid var(--border2);
  border-radius: 22px; padding: 30px;
  box-shadow: var(--shadow-lg);
}

/* ─── Table Wrapper ─── */
.table-wrapper { overflow-x: auto; border-radius: var(--r-sm) }

/* ─── Admin Layout ─── */
.admin-layout { display: flex; gap: 0; min-height: calc(100vh - 60px) }
.admin-sidebar {
  width: 210px; flex-shrink: 0;
  background: var(--glass2);
  backdrop-filter: blur(20px);
  border-right: 1.5px solid var(--border);
  padding: 20px 0;
}
.admin-sidebar a {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 20px; text-decoration: none;
  color: var(--muted); font-size: 0.88rem; font-weight: 500;
  transition: var(--t);
  border-left: 3px solid transparent;
  position: relative;
  font-family: 'Source Serif 4', serif;
}
.admin-sidebar a:hover, .admin-sidebar a.active {
  color: var(--text); background: rgba(196,134,42,0.08);
  border-left-color: var(--accent);
}
.admin-sidebar a.active { color: var(--accent3) }
.admin-content { flex: 1; padding: 28px; overflow: auto }

@media (max-width: 640px) {
  .admin-layout { flex-direction: column }
  .admin-sidebar {
    width: 100%; display: flex; overflow-x: auto;
    border-right: none; border-bottom: 1.5px solid var(--border); padding: 0;
  }
  .admin-sidebar a {
    padding: 11px 16px; border-left: none;
    border-bottom: 3px solid transparent; white-space: nowrap;
  }
  .admin-sidebar a.active { border-bottom-color: var(--accent); border-left: none }
}

/* ─── Gradient Text Utility ─── */
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent4));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

/* ─── Warm Border Utility ─── */
.warm-border { border-color: var(--accent) !important; box-shadow: 0 0 0 3px rgba(196,134,42,0.12) }

/* ─── Responsive ─── */
@media (max-width: 640px) {
  .bottom-nav { display: flex }
  .container { padding-bottom: 90px }
  .navbar-search { display: none }
  .book-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 12px }
}

@media (min-width: 641px) {
  #toast { bottom: 24px }
}

/* ─── Animations ─── */
@keyframes fadeInUp {
  from { opacity:0; transform:translateY(16px) }
  to   { opacity:1; transform:translateY(0) }
}
@keyframes fadeIn {
  from { opacity:0 } to { opacity:1 }
}
@keyframes pulse {
  0%, 100% { box-shadow: var(--glow-sm) }
  50%       { box-shadow: var(--glow) }
}
@keyframes shimmer {
  0%   { background-position: -200% center }
  100% { background-position: 200% center }
}

.fade-in   { animation: fadeIn 0.4s ease both }
.fade-up   { animation: fadeInUp 0.5s ease both }
.pulse-glow { animation: pulse 2.5s ease-in-out infinite }

/* ─── Skeleton Loader ─── */
.skeleton {
  background: linear-gradient(90deg,
    rgba(196,134,42,0.06) 25%,
    rgba(196,134,42,0.12) 50%,
    rgba(196,134,42,0.06) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--r-xs);
}

/* ─── Book Spine Decorative Element ─── */
.book-spine-accent {
  width: 3px;
  background: linear-gradient(to bottom, var(--accent), var(--accent2));
  border-radius: 2px;
  flex-shrink: 0;
}