@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ===== Reset & Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: var(--bg-deep);
}
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-deep);
  color: var(--ink);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  will-change: auto;
}
/* 主题切换过渡 - 仅在 html 上触发 */
html.theme-transitioning,
html.theme-transitioning *,
html.theme-transitioning *::before,
html.theme-transitioning *::after {
  transition: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease !important;
}

/* ===== Background Effects ===== */
.bg-effects { position: fixed; inset: 0; z-index: 0; pointer-events: none; }
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
  pointer-events: none;
  animation: orbFloat 20s ease-in-out infinite;
}
.bg-orb.orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--orb-1), transparent 70%);
  top: -200px; right: -100px;
  animation-delay: 0s;
}
.bg-orb.orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--orb-2), transparent 70%);
  bottom: -150px; left: -100px;
  animation-delay: -7s;
}
.bg-orb.orb-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--orb-3), transparent 70%);
  top: 40%; left: 60%;
  animation-delay: -14s;
  opacity: 0.2;
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.1); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ===== Announcement Bar ===== */
.announcement-bar {
  position: relative;
  z-index: 10;
  background: var(--announcement-bg);
  padding: 0.55rem 0;
  font-size: 0.82rem;
  transition: all 0.3s ease;
}
.announcement-bar.hidden { display: none; }
.announcement-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  position: relative;
}
.announcement-icon { font-size: 0.9rem; }
.announcement-text { color: var(--announcement-text); font-weight: 500; transition: opacity 0.3s ease; }
.announcement-text.announcement-fade-out { opacity: 0; }
.announcement-close {
  position: absolute;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.2);
  border: none;
  color: #fff;
  width: 24px; height: 24px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
.announcement-close:hover { background: rgba(255,255,255,0.35); }

/* ===== Main Layout ===== */
.page-wrap {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 2rem 4rem;
}

/* ===== Top Bar ===== */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.6rem 0;
  background: var(--bg-deep);
  transition: box-shadow 0.3s ease;
}
.top-bar.is-stuck {
  box-shadow: 0 1px 0 var(--border);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  transition: opacity 0.2s ease;
}
.brand:hover {
  opacity: 0.7;
}
.brand-mark {
  width: 32px; height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-warm));
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  color: #fff;
}
.top-actions {
  display: flex;
  gap: 0.5rem;
}
.category-dropdown-wrap {
  position: relative;
}
.category-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 160px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.4rem;
  box-shadow: 0 8px 32px var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 200;
}
.category-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.category-dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.7rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--ink-dim);
  white-space: nowrap;
  transition: all 0.2s ease;
}
.category-dropdown-item:hover {
  background: var(--bg-surface-hover);
  color: var(--accent);
}
.top-btn {
  width: 36px; height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--ink-dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  transition: all 0.3s ease;
}
.top-btn:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-hover);
  color: var(--ink);
  transform: translateY(-2px);
}

/* ===== Hero Section ===== */
.hero {
  text-align: center;
  margin-bottom: 3rem;
}
.time-display {
  font-family: 'JetBrains Mono', monospace;
  font-size: 4rem;
  font-weight: 300;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--ink), var(--ink-dim));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
  line-height: 1.1;
}
.date-display {
  font-size: 0.9rem;
  color: var(--ink-dim);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}
.greeting {
  font-size: 1.2rem;
  font-weight: 300;
  color: var(--ink);
  min-height: 2rem;
}
.greeting .cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ===== Search Bar ===== */
.search-container {
  max-width: 640px;
  margin: 0 auto 2.5rem;
  position: relative;
  z-index: 10;
}
.search-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.1rem;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 16px;
  backdrop-filter: blur(20px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.search-bar:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow), 0 8px 32px var(--shadow);
  transform: translateY(-1px);
}
.search-bar .search-icon {
  color: var(--ink-faint);
  font-size: 1.2rem;
  flex-shrink: 0;
}
.search-bar input {
  flex: 1;
  background: none;
  border: none;
  color: var(--ink);
  font-size: 0.95rem;
  outline: none;
  font-family: inherit;
}
.search-bar input::placeholder { color: var(--ink-faint); }
.search-engine-wrap {
  position: relative;
}
.search-engine {
  padding: 0.4rem 1.8rem 0.4rem 0.7rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--ink-dim);
  font-size: 0.8rem;
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238888a0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 6px center;
  transition: all 0.3s;
}
.search-engine:hover, .search-engine:focus {
  border-color: var(--accent);
  color: var(--accent);
}
/* Fix dropdown options visibility */
.search-engine option {
  background: var(--bg-deep);
  color: var(--ink);
  padding: 8px;
}

/* Search Dropdown */
.search-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 0; right: 0;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 9999;
  box-shadow: 0 16px 48px var(--shadow);
  isolation: isolate;
}
.search-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.search-dropdown .dropdown-item {
  padding: 0.85rem 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: background 0.2s;
  border-bottom: 1px solid var(--border);
  background: var(--bg-glass);
  position: relative;
  z-index: 1;
}
.search-dropdown .dropdown-item:last-child { border-bottom: none; }
.search-dropdown .dropdown-item:hover { background: var(--bg-surface-hover); }
.search-dropdown .dropdown-item .item-icon {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-cool));
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
  color: #fff;
}
.search-dropdown .dropdown-item .item-info { flex: 1; min-width: 0; }
.search-dropdown .dropdown-item .item-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.search-dropdown .dropdown-item .item-url {
  font-size: 0.75rem;
  color: var(--ink-faint);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.search-dropdown .dropdown-item .item-tag {
  font-size: 0.7rem;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--bg-surface);
  color: var(--ink-dim);
  flex-shrink: 0;
}
.search-dropdown .no-results {
  padding: 2rem;
  text-align: center;
  color: var(--ink-dim);
  font-size: 0.9rem;
}

/* ===== Quick Actions ===== */
.quick-actions {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.quick-action {
  padding: 0.5rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--ink-dim);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.quick-action:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-surface-hover);
  transform: translateY(-2px);
}

/* ===== Section Title ===== */
.section-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.section-title .title-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}
.section-action {
  padding: 0.3rem 0.7rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--ink-dim);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
}
.section-action:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== Nav Grid ===== */
.nav-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.7rem;
  margin-bottom: 2.5rem;
}
.nav-card {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.9rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.nav-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-cool));
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
  border-radius: 14px;
}
.nav-card:hover {
  transform: translateY(-3px) scale(1.02);
  border-color: var(--accent);
  box-shadow: 0 8px 30px var(--accent-glow), 0 2px 8px rgba(0,0,0,0.08);
}
.nav-card:hover::after { opacity: 0.08; }
.nav-card:hover .card-title { color: var(--accent); }
.nav-card > * { position: relative; z-index: 1; }
.card-icon {
  width: 38px; height: 38px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.5), rgba(255,255,255,0.2));
  color: var(--accent);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow:
    0 2px 8px rgba(0,0,0,0.06),
    inset 0 1px 0 rgba(255,255,255,0.7),
    inset 0 -1px 0 rgba(0,0,0,0.03);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}
.card-icon::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255,255,255,0.5), transparent);
  border-radius: 12px 12px 0 0;
  pointer-events: none;
}
.nav-card:hover .card-icon {
  transform: scale(1.1) rotate(-3deg);
  box-shadow:
    0 4px 16px rgba(0,0,0,0.1),
    inset 0 1px 0 rgba(255,255,255,0.7),
    inset 0 -1px 0 rgba(0,0,0,0.04);
}
.card-info { flex: 1; min-width: 0; }
.card-title {
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 0.1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.3s;
}
.card-desc {
  font-size: 0.73rem;
  color: var(--ink-faint);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card-actions {
  display: flex;
  gap: 0.15rem;
  opacity: 0;
  transform: translateX(6px);
  transition: all 0.3s ease;
}
.nav-card:hover .card-actions {
  opacity: 1;
  transform: translateX(0);
}
.card-actions button {
  width: 24px; height: 24px;
  border-radius: 6px;
  border: none;
  background: none;
  color: var(--ink-faint);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: all 0.2s;
}
.card-actions button:hover { color: var(--ink); background: var(--bg-surface-hover); }
.card-actions button.delete:hover { color: var(--danger); }

/* Add Card */
.add-card {
  border-style: dashed;
  justify-content: center;
  color: var(--ink-faint);
  min-height: 60px;
}
.add-card .add-icon {
  font-size: 1.2rem;
  width: auto; height: auto;
  background: none;
  color: inherit;
}
.add-card:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-surface-hover);
}
.add-card:hover::after { display: none; }

/* ===== Notes ===== */
.notes-section { margin-bottom: 2.5rem; }
.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.7rem;
}
.note-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem;
  transition: all 0.3s ease;
  position: relative;
}
.note-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.note-card .note-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}
.note-card .note-color {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.note-card .note-actions {
  display: flex;
  gap: 0.2rem;
}
.note-card .note-actions button {
  width: 24px; height: 24px;
  border-radius: 6px;
  border: none;
  background: none;
  color: var(--ink-faint);
  cursor: pointer;
  font-size: 0.8rem;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.note-card .note-actions button:hover { color: var(--ink); background: var(--bg-surface-hover); }
.note-card textarea {
  width: 100%;
  background: none;
  border: none;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.85rem;
  resize: none;
  outline: none;
  line-height: 1.5;
  min-height: 50px;
}
.note-card textarea::placeholder { color: var(--ink-faint); }
.add-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 100px;
  cursor: pointer;
  color: var(--ink-faint);
  font-size: 0.85rem;
  border-style: dashed;
}
.add-note:hover { color: var(--accent); border-color: var(--accent); }

/* ===== Todo List ===== */
.todo-section { margin-bottom: 2.5rem; }
.todo-count {
  font-size: 0.75rem;
  color: var(--ink-faint);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}
.todo-input-wrap {
  margin-bottom: 0.75rem;
}
.todo-input-wrap input {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-input);
  color: var(--ink);
  font-size: 0.9rem;
  outline: none;
  transition: all 0.3s;
  font-family: inherit;
}
.todo-input-wrap input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.todo-input-wrap input::placeholder { color: var(--ink-faint); }
.todo-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.todo-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.65rem 0.9rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: all 0.3s ease;
}
.todo-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-surface-hover);
}
.todo-item.completed .todo-text {
  text-decoration: line-through;
  color: var(--ink-faint);
}
.todo-checkbox {
  width: 18px; height: 18px;
  border-radius: 5px;
  border: 2px solid var(--border);
  background: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s;
  color: transparent;
  font-size: 0.7rem;
}
.todo-checkbox:hover { border-color: var(--accent); }
.todo-item.completed .todo-checkbox {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.todo-text {
  flex: 1;
  font-size: 0.85rem;
  color: var(--ink);
  cursor: pointer;
}
.todo-delete {
  width: 22px; height: 22px;
  border-radius: 5px;
  border: none;
  background: none;
  color: var(--ink-faint);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  opacity: 0;
  transition: all 0.2s;
}
.todo-item:hover .todo-delete { opacity: 1; }
.todo-delete:hover { color: var(--danger); }

/* ===== Friend Links ===== */
.friend-links-section { margin-bottom: 2.5rem; }
.friend-links-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.friend-link-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--ink-dim);
  font-size: 0.82rem;
  transition: all 0.3s ease;
}
.friend-link-item:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-surface-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--shadow);
}
.friend-link-item .fl-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.5;
  flex-shrink: 0;
  transition: opacity 0.3s;
}
.friend-link-item:hover .fl-dot { opacity: 1; }
.friend-link-item .fl-sep {
  color: var(--ink-faint);
  font-size: 0.7rem;
  opacity: 0.5;
}

/* ===== Footer ===== */
.site-footer {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  color: var(--ink-faint);
  font-size: 0.78rem;
}
.site-footer kbd {
  display: inline-block;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--ink-dim);
}
.footer-legal {
  margin-top: 0.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}
.footer-icp {
  color: var(--ink-faint);
  text-decoration: none;
  font-size: 0.72rem;
  transition: color 0.2s;
}
.footer-icp:hover { color: var(--accent); }
.footer-copyright {
  color: var(--ink-faint);
  font-size: 0.72rem;
}

.scroll-buttons {
  position: fixed;
  right: 1.5rem;
  bottom: 2rem;
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.scroll-btn {
  width: 40px; height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-glass);
  color: var(--ink-dim);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px var(--shadow);
}
.scroll-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.modal-overlay.active {
  display: flex;
  opacity: 1;
}
.modal {
  background: linear-gradient(145deg, var(--bg-glass), var(--bg-deep));
  border: 1px solid var(--border);
  border-radius: 20px;
  width: 100%;
  max-width: 440px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 80px var(--shadow);
  transform: scale(0.95) translateY(20px);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}
.modal-lg { max-width: 560px; }
.modal-header {
  padding: 1.5rem 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--ink), var(--ink-dim));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.modal-close {
  width: 32px; height: 32px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--ink-dim);
  cursor: pointer;
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.modal-close:hover { border-color: var(--danger); color: var(--danger); }
.modal-body { padding: 1.25rem 1.5rem; }
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--ink-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.form-group label .required { color: var(--danger); }
.form-group input,
.form-group select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--bg-input);
  color: var(--ink);
  font-size: 0.88rem;
  outline: none;
  transition: all 0.3s;
  font-family: inherit;
}
.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
/* Fix select dropdown options */
.form-group select option {
  background: var(--bg-deep);
  color: var(--ink);
  padding: 8px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}
.modal-footer {
  padding: 0 1.5rem 1.5rem;
  display: flex;
  gap: 0.6rem;
  justify-content: flex-end;
}
.btn {
  padding: 0.55rem 1.1rem;
  border-radius: 10px;
  border: none;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  font-family: inherit;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-cool));
  color: #fff;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-secondary {
  background: var(--bg-surface);
  color: var(--ink-dim);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--border-hover); color: var(--ink); }
.btn-danger {
  background: rgba(251,113,133,0.1);
  color: var(--danger);
  border: 1px solid rgba(251,113,133,0.2);
}
.btn-danger:hover { background: rgba(251,113,133,0.2); }

/* ===== Settings Specific ===== */
.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.settings-section {
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}
.settings-section:last-child { border-bottom: none; }
.settings-section h4 {
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.9rem;
  color: var(--ink-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.setting-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.7rem;
}
.setting-item label { font-size: 0.82rem; color: var(--ink-dim); }
.toggle-switch {
  position: relative;
  width: 42px;
  height: 22px;
  flex-shrink: 0;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  transition: 0.3s;
}
.toggle-slider::before {
  content: "";
  position: absolute;
  height: 16px;
  width: 16px;
  left: 2px;
  bottom: 2px;
  background: var(--ink-faint);
  border-radius: 50%;
  transition: 0.3s;
}
.toggle-switch input:checked + .toggle-slider {
  background: linear-gradient(135deg, var(--accent), var(--accent-cool));
  border-color: transparent;
}
.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(20px);
  background: #fff;
}
.setting-select {
  padding: 0.4rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--ink);
  font-size: 0.82rem;
  outline: none;
  cursor: pointer;
}
.setting-select option {
  background: var(--bg-deep);
  color: var(--ink);
  padding: 8px;
}
.theme-options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}
.theme-option {
  padding: 0.5rem;
  border-radius: 10px;
  border: 2px solid var(--border);
  background: var(--bg-surface);
  cursor: pointer;
  text-align: center;
  font-size: 0.75rem;
  color: var(--ink-dim);
  transition: all 0.3s;
}
.theme-option:hover { border-color: var(--border-hover); }
.theme-option.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-surface-hover);
}
.theme-option .theme-dot {
  width: 20px; height: 20px;
  border-radius: 50%;
  margin: 0 auto 0.3rem;
}
.data-actions {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.data-actions .btn { width: 100%; text-align: center; }

/* ===== Toast ===== */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.toast {
  padding: 0.8rem 1.1rem;
  border-radius: 12px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px var(--shadow);
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  animation: toastIn 0.4s cubic-bezier(0.4, 0, 0.2, 1), toastOut 0.4s ease 2.6s forwards;
  max-width: 320px;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
@keyframes toastIn {
  from { opacity: 0; transform: translateX(30px) scale(0.95); }
  to { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateX(30px); }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-faint); }

/* ===== Responsive ===== */
/* 中等屏幕：3列 */
@media (max-width: 1200px) {
  .nav-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .nav-grid { grid-template-columns: repeat(2, 1fr); gap: 0.6rem; }
}

@media (max-width: 768px) {
  .page-wrap { padding: 1.5rem 1rem 3rem; }
  .time-display { font-size: 2.5rem; }
  .nav-card { padding: 0.8rem 0.9rem; }
  .card-name { font-size: 0.85rem; }
  .card-desc { font-size: 0.68rem; }
  .notes-grid { grid-template-columns: 1fr; }
  .settings-grid { grid-template-columns: 1fr; }
  .theme-options { grid-template-columns: repeat(4, 1fr); }
  .top-bar { margin-bottom: 2rem; }
  .hero { margin-bottom: 2rem; }
  .announcement-inner { padding: 0 1rem; }
  .announcement-close { right: 1rem; }
}

@media (max-width: 480px) {
  .page-wrap { padding: 1rem 0.8rem 2rem; }
  .top-bar { margin-bottom: 1.2rem; flex-wrap: wrap; }
  .top-actions { gap: 0.3rem; flex-wrap: wrap; justify-content: flex-end; }
  .top-btn { width: 32px; height: 32px; font-size: 0.85rem; }
  .brand-text { font-size: 1.1rem; }
  .hero { margin-bottom: 1.2rem; }
  .time-display { font-size: 2rem; }
  .date-display { font-size: 0.8rem; }
  .greeting { font-size: 1.1rem; }
  .search-container { margin-bottom: 1.5rem; }
  .search-bar { padding: 0.65rem 0.8rem; gap: 0.4rem; }
  .search-bar input { font-size: 0.82rem; min-width: 0; }
  .search-engine {
    padding: 0.3rem 1.4rem 0.3rem 0.5rem;
    font-size: 0.72rem;
    border-radius: 8px;
    background-position: right 4px center;
    background-size: 10px;
  }
  .search-dropdown { border-radius: 12px; }
  .quick-actions { gap: 0.4rem; margin-bottom: 1.5rem; }
  .quick-action { padding: 0.45rem 0.7rem; font-size: 0.75rem; gap: 0.3rem; }
  .nav-grid { grid-template-columns: 1fr; gap: 0.5rem; margin-bottom: 1.5rem; }
  .nav-card { padding: 0.75rem 0.85rem; }
  .card-icon { width: 34px; height: 34px; font-size: 1rem; }
  .card-name { font-size: 0.85rem; }
  .card-desc { font-size: 0.7rem; }
  .section-title { font-size: 0.8rem; margin-bottom: 0.8rem; }
  .notes-grid { grid-template-columns: 1fr; gap: 0.6rem; }
  .note-card { padding: 0.8rem; }
  .todo-section { padding: 0.8rem; }
  .friend-links-grid { gap: 0.4rem; }
  .friend-link-item { padding: 0.45rem 0.8rem; font-size: 0.75rem; }
  .site-footer { font-size: 0.7rem; padding: 1.5rem 0; }
  .footer-legal { gap: 0.4rem; }
  .scroll-buttons { right: 0.8rem; bottom: 1.2rem; }
  .scroll-btn { width: 36px; height: 36px; border-radius: 10px; }
  .form-row { grid-template-columns: 1fr; }
  .theme-options { grid-template-columns: repeat(3, 1fr); }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(25px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in {
  animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) both;
}