/* css/main.css */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,800;1,400&family=Lato:wght@300;400;700&family=IM+Fell+English:ital@0;1&display=swap');

/* ============================================================
   CSS VARIABLES — THEMES
   ============================================================ */
:root, [data-theme="light"] {
  --bg-primary: #f8f5f0;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-sidebar: #f0ece4;
  --text-primary: #1a1208;
  --text-secondary: #5a5040;
  --text-muted: #9a8f80;
  --accent: #c0392b;
  --accent-hover: #a93226;
  --accent-soft: rgba(192, 57, 43, 0.1);
  --border: #e0d8cc;
  --shadow: rgba(0,0,0,0.08);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.09);
  --shadow-hover: 0 16px 48px rgba(0,0,0,0.16);
  --input-bg: #ffffff;
  --nav-bg: rgba(248, 245, 240, 0.95);
  --overlay: rgba(26, 18, 8, 0.7);
  --tag-bg: #ede9e1;
  --tag-text: #5a5040;
  --success: #27ae60;
  --warning: #e67e22;
  --reader-bg: #f8f5f0;
  --reader-text: #1a1208;
  --scrollbar: #d0c8bc;
}

[data-theme="dark"] {
  --bg-primary: #0f0f14;
  --bg-secondary: #1a1a24;
  --bg-card: #1e1e2a;
  --bg-sidebar: #16161f;
  --text-primary: #e8e4f0;
  --text-secondary: #a09ab8;
  --text-muted: #5a5470;
  --accent: #a78bfa;
  --accent-hover: #8b5cf6;
  --accent-soft: rgba(167, 139, 250, 0.12);
  --border: #2a2a3a;
  --shadow: rgba(0,0,0,0.4);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-hover: 0 16px 48px rgba(0,0,0,0.5);
  --input-bg: #252535;
  --nav-bg: rgba(15, 15, 20, 0.95);
  --overlay: rgba(0, 0, 0, 0.8);
  --tag-bg: #252535;
  --tag-text: #a09ab8;
  --success: #34d399;
  --warning: #fbbf24;
  --reader-bg: #0f0f14;
  --reader-text: #e8e4f0;
  --scrollbar: #2a2a3a;
}

[data-theme="vintage"] {
  --bg-primary: #f5e6c8;
  --bg-secondary: #fdf3dc;
  --bg-card: #fdf3dc;
  --bg-sidebar: #efe0bc;
  --text-primary: #2c1a0e;
  --text-secondary: #6b4c2a;
  --text-muted: #a07850;
  --accent: #8b4513;
  --accent-hover: #723a10;
  --accent-soft: rgba(139, 69, 19, 0.1);
  --border: #d4b896;
  --shadow: rgba(44, 26, 14, 0.1);
  --shadow-card: 0 4px 24px rgba(44, 26, 14, 0.12);
  --shadow-hover: 0 16px 48px rgba(44, 26, 14, 0.2);
  --input-bg: #fdf3dc;
  --nav-bg: rgba(245, 230, 200, 0.95);
  --overlay: rgba(44, 26, 14, 0.7);
  --tag-bg: #e8d4ae;
  --tag-text: #6b4c2a;
  --success: #5d8a3c;
  --warning: #c47d1a;
  --reader-bg: #f5e6c8;
  --reader-text: #2c1a0e;
  --scrollbar: #c4a882;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Lato', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
  line-height: 1.6;
}

h1, h2, h3 { font-family: 'Playfair Display', serif; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

img { max-width: 100%; }

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 3px; }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  height: 64px;
  gap: 1.5rem;
}

.navbar-brand {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.5px;
  white-space: nowrap;
}

.navbar-brand span {
  font-style: italic;
  font-weight: 400;
}

.navbar-center { flex: 1; display: flex; justify-content: center; }

.navbar-actions { display: flex; align-items: center; gap: 0.75rem; }

/* Search Bar */
.search-wrapper {
  position: relative;
  width: 100%;
  max-width: 480px;
}

.search-input {
  width: 100%;
  padding: 0.6rem 1rem 0.6rem 2.8rem;
  background: var(--input-bg);
  border: 1.5px solid var(--border);
  border-radius: 32px;
  color: var(--text-primary);
  font-family: 'Lato', sans-serif;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.search-icon {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  background: var(--bg-secondary);
  border: 1.5px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  padding: 3px;
  gap: 2px;
}

.theme-btn {
  padding: 0.3rem 0.65rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.2s;
  white-space: nowrap;
}

.theme-btn.active {
  background: var(--accent);
  color: #fff;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.2rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-family: 'Lato', sans-serif;
  font-size: 0.875rem;
  font-weight: 700;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 12px var(--shadow); color: #fff; }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn-outline:hover { background: var(--accent-soft); }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-secondary); color: var(--text-primary); }

.btn-sm { padding: 0.35rem 0.85rem; font-size: 0.8rem; }
.btn-icon {
  padding: 0.5rem;
  border-radius: 50%;
  width: 38px;
  height: 38px;
  justify-content: center;
}

/* Avatar */
.avatar-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  overflow: hidden;
  cursor: pointer;
  background: var(--accent-soft);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
}

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  min-width: 180px;
  padding: 0.5rem;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: all 0.2s;
}
.dropdown-menu.open { opacity: 1; pointer-events: all; transform: translateY(0); }
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.15s;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}
.dropdown-item:hover { background: var(--bg-secondary); color: var(--text-primary); }
.dropdown-divider { height: 1px; background: var(--border); margin: 0.4rem 0; }

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.main-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 2rem;
}

/* Section Headers */
.section-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.section-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}
.section-count {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* ============================================================
   GENRE FILTER
   ============================================================ */
.genre-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  align-items: center;
}

.genre-chip {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 1rem;
  border-radius: 24px;
  background: var(--bg-secondary);
  border: 1.5px solid var(--border);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.2s;
  user-select: none;
}

.genre-chip input[type="checkbox"] {
  width: 14px; height: 14px;
  accent-color: var(--accent);
  cursor: pointer;
}

.genre-chip:has(input:checked),
.genre-chip.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.genre-chip:hover { border-color: var(--accent); }

/* ============================================================
   BOOK CARDS GRID
   ============================================================ */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 1.75rem;
}

.book-card {
  background: var(--bg-card);
  border-radius: 12px;
  border: 1.5px solid var(--border);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: var(--shadow-card);
  position: relative;
  display: flex;
  flex-direction: column;
}

.book-card:hover {
  transform: translateY(-6px) scale(1.03);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
  z-index: 10;
}

.book-cover {
  width: 100%;
  aspect-ratio: 2/3;
  object-fit: cover;
  display: block;
  background: var(--bg-sidebar);
}

.book-cover-placeholder {
  width: 100%;
  aspect-ratio: 2/3;
  background: linear-gradient(135deg, var(--accent-soft) 0%, var(--bg-sidebar) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--accent);
  font-size: 2.5rem;
}

.book-cover-placeholder span {
  font-family: 'Playfair Display', serif;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-align: center;
  padding: 0 0.5rem;
}

.book-info {
  padding: 0.85rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.book-title {
  font-family: 'Playfair Display', serif;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-author {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 400;
}

.book-genres {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.4rem;
}

.book-genre-tag {
  font-size: 0.68rem;
  padding: 0.15rem 0.5rem;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 20px;
  font-weight: 600;
}

/* Hover description overlay */
.book-description-overlay {
  position: absolute;
  inset: 0;
  background: var(--overlay);
  backdrop-filter: blur(4px);
  color: #fff;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  opacity: 0;
  transition: opacity 0.3s ease;
  border-radius: 12px;
}

.book-card:hover .book-description-overlay { opacity: 1; }

.book-description-overlay h4 {
  font-family: 'Playfair Display', serif;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.book-description-overlay p {
  font-size: 0.78rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 5;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: rgba(255,255,255,0.85);
}

.book-description-overlay .overlay-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.overlay-btn {
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  border: 1.5px solid rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  flex: 1;
  text-align: center;
}
.overlay-btn:hover { background: rgba(255,255,255,0.3); }
.overlay-btn.primary { background: var(--accent); border-color: var(--accent); }

/* Wishlist heart icon */
.wishlist-icon {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  z-index: 5;
}
.wishlist-icon:hover { transform: scale(1.1); }
.wishlist-icon.wishlisted { color: #e74c3c; }

/* ============================================================
   MODALS
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  backdrop-filter: blur(4px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  background: var(--bg-card);
  border-radius: 16px;
  border: 1.5px solid var(--border);
  box-shadow: 0 24px 80px rgba(0,0,0,0.3);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.modal-overlay.open .modal { transform: scale(1); }

.modal-header {
  padding: 1.5rem 1.5rem 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-title { font-family: 'Playfair Display', serif; font-size: 1.3rem; font-weight: 700; }
.modal-close {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--bg-secondary);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.modal-close:hover { background: var(--accent-soft); color: var(--accent); }

.modal-body { padding: 1.5rem; }
.modal-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--border); display: flex; gap: 0.75rem; justify-content: flex-end; }

/* ============================================================
   FORMS
   ============================================================ */
.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--input-bg);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: 'Lato', sans-serif;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-textarea { resize: vertical; min-height: 90px; }
.form-select option { background: var(--bg-card); }

/* File Upload */
.file-upload-area {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-muted);
}
.file-upload-area:hover, .file-upload-area.drag-over {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}
.file-upload-area input { display: none; }
.file-upload-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.file-upload-text { font-size: 0.85rem; }
.file-name { margin-top: 0.5rem; font-size: 0.8rem; color: var(--success); font-weight: 700; }

/* Genre Multi-select */
.genre-checkboxes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.genre-check-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.2s;
}
.genre-check-item:has(input:checked) {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}
.genre-check-item input { display: none; }

/* ============================================================
   TOAST NOTIFICATIONS
   ============================================================ */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  font-size: 0.875rem;
  color: var(--text-primary);
  min-width: 260px;
  animation: slideInRight 0.3s ease;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid #e74c3c; }
.toast.info { border-left: 3px solid var(--accent); }

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

@keyframes fadeOut {
  to { opacity: 0; transform: translateX(100%); }
}

/* ============================================================
   LOADING
   ============================================================ */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
}
.spinner {
  width: 48px; height: 48px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-books {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 1.75rem;
}
.book-skeleton {
  background: var(--bg-card);
  border-radius: 12px;
  border: 1.5px solid var(--border);
  overflow: hidden;
  animation: pulse 1.5s ease infinite;
}
.skeleton-cover { aspect-ratio: 2/3; background: var(--bg-sidebar); }
.skeleton-info { padding: 0.85rem; }
.skeleton-line {
  height: 12px;
  background: var(--bg-sidebar);
  border-radius: 6px;
  margin-bottom: 0.5rem;
}
.skeleton-line:last-child { width: 60%; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
}
.empty-state-icon { font-size: 3rem; margin-bottom: 1rem; }
.empty-state h3 { font-family: 'Playfair Display', serif; color: var(--text-secondary); margin-bottom: 0.5rem; }

/* ============================================================
   READER PAGE
   ============================================================ */
.reader-container {
  display: flex;
  height: 100vh;
  overflow: hidden;
  background: var(--reader-bg);
  color: var(--reader-text);
}

.reader-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.reader-toolbar {
  height: 52px;
  display: flex;
  align-items: center;
  padding: 0 1rem;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  flex-shrink: 0;
}

.reader-toolbar-title {
  flex: 1;
  text-align: center;
  font-family: 'Playfair Display', serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.reader-frame-wrapper {
  flex: 1;
  overflow: hidden;
  position: relative;
}

#pdfViewer {
  width: 100%;
  height: 100%;
  border: none;
  background: var(--reader-bg);
}

/* Reader Sidebar (notes/bookmarks) */
.reader-sidebar {
  width: 320px;
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  transition: width 0.3s ease;
  flex-shrink: 0;
}
.reader-sidebar.collapsed { width: 0; overflow: hidden; }

.sidebar-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sidebar-tab {
  flex: 1;
  padding: 0.75rem 0.5rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  border-bottom: 2px solid transparent;
}
.sidebar-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Note input area */
.note-input-area {
  border-top: 1px solid var(--border);
  padding: 0.75rem;
  flex-shrink: 0;
}

.note-textarea {
  width: 100%;
  padding: 0.6rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--text-primary);
  font-size: 0.82rem;
  resize: none;
  min-height: 70px;
  font-family: 'Lato', sans-serif;
  outline: none;
}

.note-item, .bookmark-item {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: 0.82rem;
}

.note-item-header, .bookmark-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
}

.note-page-badge {
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 20px;
  font-weight: 700;
}

.delete-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.2rem;
  border-radius: 4px;
  font-size: 0.75rem;
}
.delete-btn:hover { color: #e74c3c; }

/* Page nav */
.page-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.page-nav input {
  width: 52px;
  text-align: center;
  padding: 0.25rem 0.4rem;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text-primary);
  font-size: 0.82rem;
  outline: none;
}

/* ============================================================
   AUTH PAGE
   ============================================================ */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  padding: 2rem;
}

.auth-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
  width: 100%;
  max-width: 440px;
  overflow: hidden;
}

.auth-header {
  padding: 2.5rem 2.5rem 1.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.auth-logo {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -1px;
  margin-bottom: 0.5rem;
}
.auth-logo span { font-style: italic; font-weight: 400; }

.auth-subtitle { font-size: 0.875rem; color: var(--text-muted); }

.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
}

.auth-tab {
  flex: 1;
  padding: 1rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  border-bottom: 2px solid transparent;
}
.auth-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.auth-body { padding: 2rem 2.5rem 2.5rem; }

.auth-error {
  background: rgba(231, 76, 60, 0.1);
  border: 1.5px solid rgba(231, 76, 60, 0.3);
  color: #e74c3c;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.82rem;
  margin-bottom: 1rem;
  display: none;
}
.auth-error.show { display: block; }

/* ============================================================
   ADMIN PAGE
   ============================================================ */
.admin-container {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 240px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  padding: 1.5rem 1rem;
  flex-shrink: 0;
}

.admin-sidebar-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 0.25rem;
}
.admin-sidebar-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.7rem 0.85rem;
  border-radius: 8px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 0.2s;
  margin-bottom: 0.25rem;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}
.admin-nav-item:hover, .admin-nav-item.active {
  background: var(--accent-soft);
  color: var(--accent);
}

.admin-main { flex: 1; padding: 2rem; overflow-y: auto; }
.admin-section { display: none; }
.admin-section.active { display: block; }

.admin-section-header {
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.admin-section-title { font-family: 'Playfair Display', serif; font-size: 1.5rem; font-weight: 700; }

/* Admin Table */
.admin-table-wrapper { overflow-x: auto; }
.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.admin-table th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  border-bottom: 1.5px solid var(--border);
}
.admin-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}
.admin-table tr:hover td { background: var(--bg-secondary); }

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 700;
}
.status-badge.pending { background: rgba(230, 126, 34, 0.12); color: var(--warning); }
.status-badge.approved { background: rgba(39, 174, 96, 0.12); color: var(--success); }
.status-badge.rejected { background: rgba(231, 76, 60, 0.12); color: #e74c3c; }

/* Stats cards */
.admin-stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 1rem; margin-bottom: 2rem; }
.stat-card, .admin-stat-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}
.stat-number, .admin-stat-value { font-family: 'Playfair Display', serif; font-size: 2rem; font-weight: 800; color: var(--accent); }
.stat-label, .admin-stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.25rem; }

/* ============================================================
   WISHLIST / SIDEBAR PANELS
   ============================================================ */
.panel-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  z-index: 400;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.panel-overlay.open { opacity: 1; pointer-events: all; }

.panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 380px;
  max-width: 100vw;
  height: 100vh;
  background: var(--bg-card);
  border-left: 1.5px solid var(--border);
  box-shadow: -8px 0 40px rgba(0,0,0,0.2);
  z-index: 401;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.panel-overlay.open .panel { transform: translateX(0); }

.panel-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}
.panel-title { font-family: 'Playfair Display', serif; font-size: 1.2rem; font-weight: 700; }
.panel-body { flex: 1; overflow-y: auto; padding: 1rem 1.5rem; }

.wishlist-book-item {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}
.wishlist-cover {
  width: 48px;
  height: 72px;
  object-fit: cover;
  border-radius: 4px;
  background: var(--bg-sidebar);
  flex-shrink: 0;
}
.wishlist-info { flex: 1; }
.wishlist-title { font-weight: 700; font-size: 0.85rem; margin-bottom: 0.2rem; }
.wishlist-author { font-size: 0.78rem; color: var(--text-muted); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .navbar { padding: 0 1rem; gap: 0.75rem; }
  .navbar-brand { font-size: 1.2rem; }
  .main-content { padding: 1.25rem 1rem; }
  .books-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 1rem; }
  .reader-sidebar { display: none; }
  .admin-sidebar { display: none; }
  .panel { width: 100vw; }
  .theme-toggle { display: none; }
}

@media (max-width: 480px) {
  .books-grid { grid-template-columns: repeat(2, 1fr); }
  .auth-body { padding: 1.5rem; }
  .auth-header { padding: 2rem 1.5rem 1.5rem; }
}