html, body {
  height: 100%;
  overflow: hidden;
}

body {
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  user-select: none;
  touch-action: pan-x pan-y;
  transition: background-color 0.15s ease, color 0.15s ease;
}

input, textarea, select {
  user-select: text;
  font-size: 16px !important;
}

::-webkit-scrollbar { display: none; }

.container-main {
  height: 100%;
  overflow-y: auto;
  overscroll-behavior: none;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

[dir="rtl"] {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.animate-pulse { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-fadeIn { animation: fadeIn 0.4s ease-out forwards; }

.book-shadow {
  box-shadow:
    0 1px 3px rgba(0,0,0,0.04),
    0 3px 8px -2px rgba(0,0,0,0.06);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.book-shadow:hover {
  box-shadow:
    0 2px 6px rgba(0,0,0,0.08),
    0 8px 20px -4px rgba(0,0,0,0.12);
  transform: translateY(-2px);
}
.dark-mode .book-shadow {
  box-shadow:
    0 1px 4px rgba(0,0,0,0.25),
    0 6px 16px -2px rgba(0,0,0,0.35);
}

header.sticky-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: rgba(255,255,255,0.85);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  padding-bottom: 0.75rem;
  padding-top: max(0.75rem, env(safe-area-inset-top));
  margin-left: -1rem;
  margin-right: -1rem;
  padding-left: 1rem;
  padding-right: 1rem;
  transition: background-color 0.15s ease;
}
.dark-mode header.sticky-header {
  background-color: rgba(0,0,0,0.85);
}

.delete-icon { opacity: 0.4; transition: opacity 0.2s; }
.delete-icon:hover { opacity: 1; color: #ef4444; }

#filterToggle { color: #9ca3af; }
#filterToggle.active { color: #000; }
.dark-mode #filterToggle { color: #6b7280; }
.dark-mode #filterToggle.active { color: #fff; }
.dark-mode #filterBadge { background-color: #fff; }

.filter-pill {
  flex-shrink: 0;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  background-color: #f3f4f6;
  color: #6b7280;
  transition: background-color 0.15s, color 0.15s;
  border: none;
  cursor: pointer;
}
.filter-pill.active { background-color: #000; color: #fff; }
.dark-mode .filter-pill { background-color: #1a1a1a; color: #888; }
.dark-mode .filter-pill.active { background-color: #fff; color: #000; }

/* Add book bottom sheet */
.add-sheet {
  transform: translateY(100%);
  transition: transform 0.3s ease;
}
.add-sheet.sheet-visible { transform: translateY(0); }
.dark-mode .add-sheet { background-color: #111; color: white; }

/* Search bar & filter panel slide animation */
#searchBar {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.22s ease, opacity 0.18s ease, margin-bottom 0.22s ease;
  margin-bottom: 0;
}
#searchBar.panel-open {
  max-height: 80px;
  opacity: 1;
  margin-bottom: 1rem;
}
#filterPanel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.25s ease, opacity 0.2s ease, margin-bottom 0.25s ease;
  margin-bottom: 0;
}
#filterPanel.panel-open {
  max-height: 400px;
  opacity: 1;
  margin-bottom: 1.5rem;
}

/* Modal animation */
#modal, #settingsModal {
  opacity: 0;
  visibility: hidden;
  transform: translateY(18px);
  pointer-events: none;
  overscroll-behavior: none;
  transition: opacity 0.24s cubic-bezier(0.4,0,0.2,1), transform 0.24s cubic-bezier(0.4,0,0.2,1), visibility 0s linear 0.24s, background-color 0.15s ease;
}
#modal.modal-visible, #settingsModal.modal-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
  transition: opacity 0.24s cubic-bezier(0.4,0,0.2,1), transform 0.24s cubic-bezier(0.4,0,0.2,1), visibility 0s linear 0s, background-color 0.15s ease;
}

/* Modal sticky nav */
.modal-nav-bg {
  background-color: rgba(255,255,255,0.94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.dark-mode .modal-nav-bg { background-color: rgba(0,0,0,0.94); }

.modal-back-btn { color: #000; }
.dark-mode .modal-back-btn { color: #ffffff; }

#detailMenu{
  width: 380px;
}

/* OLED Dark Mode */
body.dark-mode { background-color: #000000; color: #ffffff; }
.dark-mode .container-main,
.dark-mode .max-w-screen-lg { background-color: #000000; color: #ffffff; }
.dark-mode input, .dark-mode select, .dark-mode textarea { background-color: #0f0f0f; border-color: #222; color: white; }
.dark-mode #modal,
.dark-mode #settingsModal { background-color: #000000; color: white; }
.dark-mode .confirm-sheet { background-color: #111; color: white; }
.dark-mode .confirm-sheet .bg-gray-100 { background-color: #2a2a2a; color: white; }
.dark-mode .bg-gray-100 { background-color: #0f0f0f; }
.dark-mode .border-gray-100 { border-color: #1a1a1a; }
.dark-mode #detailMenu { background-color: #1a1a1a; }
.dark-mode #detailMenu button { color: #fff; }
.dark-mode #detailMenu .border-t { border-color: #2a2a2a; }
.dark-mode #detailMenu button.text-red-500 { color: #f87171; }
.dark-mode .text-gray-900,
.dark-mode h2,
.dark-mode h3 { color: #ffffff; }
.dark-mode .text-gray-700 { color: #d1d5db; }