/* ═══════════════════════════════════════════
   GoTab — 浏览器起始页样式
   深色/浅色双主题 + 毛玻璃卡片
   ═══════════════════════════════════════════ */

/* ---- CSS 变量 ---- */
:root,
[data-theme="dark"] {
  --bg: #0a0a1a;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-hover: rgba(255, 255, 255, 0.14);
  --border: rgba(255, 255, 255, 0.08);
  --text: #fff;
  --text-secondary: rgba(255, 255, 255, 0.6);
  --text-tertiary: rgba(255, 255, 255, 0.35);
  --accent: #7c3aed;
  --accent-light: #a78bfa;
  --overlay: rgba(0, 0, 0, 0.15);
  --modal-bg: #14142a;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.2);
  --success: #22c55e;
}

[data-theme="light"] {
  --bg: #f0f0f5;
  --surface: rgba(255, 255, 255, 0.75);
  --surface-hover: rgba(255, 255, 255, 0.95);
  --border: rgba(0, 0, 0, 0.08);
  --text: #1a1a2e;
  --text-secondary: rgba(0, 0, 0, 0.55);
  --text-tertiary: rgba(0, 0, 0, 0.3);
  --accent: #7c3aed;
  --accent-light: #a78bfa;
  --overlay: rgba(255, 255, 255, 0.3);
  --modal-bg: #fff;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.1);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);
  --success: #22c55e;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.4s, color 0.4s;
}

body.has-bg {
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

body.has-bg::after {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.08);
  z-index: 0;
  pointer-events: none;
}

/* ---- App Layout ---- */
.app {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 100vh;
}

/* ---- Main Content ---- */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 50px 20px;
  transition: margin 0.3s;
  margin-left: 0;
}

.sb.open ~ .main {
  margin-left: 290px;
}

/* ---- Top Bar ---- */
.topbar {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
}

/* ---- Clock ---- */
.clock-wrap {
  text-align: center;
  margin-bottom: 24px;
}

.clock {
  font-size: clamp(54px, 10vw, 90px);
  font-weight: 200;
  letter-spacing: -4px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.date {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* ---- Buttons ---- */
.btn {
  padding: 6px 14px;
  font-size: 12px;
  font-family: inherit;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
  text-decoration: none;
}

.btn:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-light);
  color: #fff;
}

.btn-danger {
  background: var(--danger-bg);
  border-color: transparent;
  color: var(--danger);
}

.btn-xs {
  padding: 4px 10px;
  font-size: 11px;
  border-radius: 12px;
}

/* ---- Search ---- */
.search {
  width: 100%;
  max-width: 560px;
  margin-bottom: 28px;
}

.search-wrapper {
  position: relative;
}

.search-box {
  display: flex;
  align-items: center;
  height: 46px;
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0 14px;
  transition: border 0.2s;
}

.search-box:focus-within {
  border-color: rgba(124, 58, 237, 0.5);
}

.search-box input {
  flex: 1;
  min-width: 0;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
}

.search-box input::placeholder {
  color: var(--text-tertiary);
}

/* 引擎弹出层 — 独立于搜索框 */
.engine-popup {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--modal-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px;
  min-width: 180px;
  z-index: 150;
  box-shadow: var(--shadow);
  display: none;
}

.engine-popup.show {
  display: block;
}

.engine-popup .ep-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all 0.15s;
}

.engine-popup .ep-item:hover {
  background: rgba(127, 127, 127, 0.1);
  color: var(--text);
}

/* ---- Categories（已隐藏 — 分类在侧边栏中） ---- */
.categories {
  display: none;
}

/* ---- Content Grid ---- */
.content {
  width: 100%;
  max-width: 1200px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 12px;
  padding-bottom: 50px;
}

/* ---- Card ---- */
.card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px 10px 16px;
  border-radius: 14px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.2s;
  position: relative;
}

[data-theme="light"] .card {
  background: transparent;
  border: none;
}

.card:hover {
  transform: translateY(-2px);
}

.card .icon {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  overflow: hidden;
  background: transparent;
}

.card .icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 10px;
}

.card .label {
  font-size: 11px;
  text-align: center;
  line-height: 1.3;
  word-break: break-word;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  width: 100%;
}

.card .delete-btn {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--danger);
  color: #fff;
  border: none;
  font-size: 10px;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.card:hover .delete-btn {
  display: flex;
}

/* ---- Empty State ---- */
.empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px;
  color: var(--text-tertiary);
  font-size: 14px;
}

/* ---- Guest Banner ---- */
.guest-banner {
  text-align: center;
  padding: 10px 20px;
  margin-bottom: 18px;
  background: rgba(124, 58, 237, 0.12);
  border-radius: 12px;
  color: var(--text-secondary);
  font-size: 13px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ---- Sidebar ---- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  width: 0;
  overflow: hidden;
  background: var(--modal-bg);
  border-right: 1px solid var(--border);
  transition: width 0.3s;
}

.sidebar.open {
  width: 290px;
}

.sidebar-inner {
  padding: 20px 16px;
  min-width: 290px;
  height: 100%;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.sidebar h4 {
  font-size: 12px;
  color: var(--text-secondary);
  margin: 18px 0 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.sidebar h4:first-child {
  margin-top: 0;
}

.sidebar .divider {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

.sidebar-toggle {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 110;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}

.sidebar-toggle:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.sidebar.open ~ .sidebar-toggle {
  left: 306px;
}

/* ---- Sidebar items ---- */
.sidebar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
}

.sidebar-row:hover {
  color: var(--text);
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  background: rgba(127, 127, 127, 0.05);
  border-radius: 8px;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--text-secondary);
}

.sidebar-item span {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---- Toggle Switch ---- */
.toggle {
  position: relative;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
}

.toggle input {
  display: none;
}

.toggle .track {
  position: absolute;
  inset: 0;
  background: rgba(127, 127, 127, 0.2);
  border-radius: 22px;
  transition: 0.3s;
  cursor: pointer;
}

.toggle .track::before {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  left: 2px;
  bottom: 2px;
  background: #fff;
  border-radius: 50%;
  transition: 0.3s;
}

.toggle input:checked + .track {
  background: var(--accent);
}

.toggle input:checked + .track::before {
  transform: translateX(18px);
}

/* ---- Blur Slider ---- */
.blur-slider {
  width: 100%;
  margin: 4px 0 12px;
}

.blur-slider input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fade-in 0.15s;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.modal {
  background: var(--modal-bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
  width: 400px;
  max-width: 92vw;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
}

.modal h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
}

.modal label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 4px;
  font-weight: 500;
}

.modal input,
.modal select,
.modal textarea {
  width: 100%;
  padding: 11px 14px;
  margin-bottom: 14px;
  background: rgba(127, 127, 127, 0.06);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  resize: vertical;
}

.modal input:focus,
.modal select:focus,
.modal textarea:focus {
  border-color: rgba(124, 58, 237, 0.5);
}

.modal select option {
  background: var(--modal-bg);
  color: var(--text);
}

.modal .btn-row {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.modal .btn-row .btn {
  flex: 1;
  justify-content: center;
}

.modal .message {
  font-size: 13px;
  text-align: center;
  margin-top: 10px;
  min-height: 18px;
}

.modal .tip {
  color: var(--text-tertiary);
  font-size: 11px;
  text-align: center;
  margin-top: 12px;
}

/* ---- Toast ---- */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  padding: 10px 24px;
  border-radius: 24px;
  font-size: 14px;
  z-index: 400;
  animation: toast-in 0.3s;
  white-space: nowrap;
}

/* ---- Animations ---- */
@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .sidebar.open {
    width: 100%;
  }

  .sidebar-inner {
    min-width: 100%;
  }

  .sidebar.open ~ .main {
    opacity: 0.3;
    pointer-events: none;
    margin-left: 0;
  }

  .sidebar.open ~ .sidebar-toggle {
    left: auto;
    right: 16px;
    z-index: 120;
  }

  .sidebar-toggle {
    top: 12px;
    left: 12px;
  }

  .topbar {
    top: 0;
    right: 0;
    padding: 10px 12px;
  }

  .btn {
    padding: 5px 10px;
    font-size: 11px;
  }

  .btn-xs {
    padding: 3px 8px;
    font-size: 10px;
  }

  .main {
    padding: 40px 12px 30px;
    margin-left: 0 !important;
  }

  .clock {
    font-size: clamp(38px, 12vw, 64px);
    letter-spacing: -2px;
  }

  .date {
    font-size: 12px;
  }

  .search {
    max-width: 100%;
    margin-bottom: 22px;
  }

  .search-box {
    height: 42px;
    padding: 0 10px;
  }

  .search-box input {
    font-size: 14px;
  }



  .grid {
    grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
    gap: 8px;
  }

  .card {
    padding: 12px 4px 10px;
    border-radius: 12px;
  }

  .card .icon {
    width: 34px;
    height: 34px;
    border-radius: 8px;
  }

  .card .label {
    font-size: 10px;
  }

  .categories {
    gap: 4px;
    margin-bottom: 18px;
  }

  .cat-btn {
    padding: 6px 12px;
    font-size: 11px;
  }

  .clock-wrap {
    margin-bottom: 18px;
  }

  .guest-banner {
    padding: 8px 14px;
    font-size: 12px;
  }

  .modal-overlay {
    align-items: flex-end;
  }

  .modal {
    width: 100%;
    max-width: 100%;
    border-radius: 18px 18px 0 0;
    max-height: 70vh;
    padding: 22px 18px;
  }

  .modal .btn-row {
    flex-direction: column;
  }

  .toast {
    font-size: 12px;
    padding: 8px 18px;
    bottom: 20px;
  }

  .engine-popup {
    left: auto;
    right: 0;
    min-width: 150px;
  }
}

@media (max-width: 380px) {
  .grid {
    grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
    gap: 6px;
  }

  .card {
    padding: 10px 2px 8px;
  }

  .card .icon {
    width: 30px;
    height: 30px;
  }

  .btn {
    padding: 4px 8px;
    font-size: 10px;
  }
}