:root {
  --bg: #eef1f6;
  --bg-image: linear-gradient(135deg, #eef1f6 0%, #e0e7ff 100%);
  --card-bg-rgb: 255, 255, 255;
  --card-border: rgba(200, 210, 225, 0.6);
  --card-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --card-shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.12);
  --text: #1a1a2e;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-rgb: 79, 70, 229;
  --accent-light: rgba(79, 70, 229, 0.1);
  --card-radius: 14px;
  --card-opacity: 0.92;
  --font-size: 14px;
  --layout-gap: 22px;
  --cards-per-row: 4;
  --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 56px;
  --max-width: 1400px;
}

[data-theme="dark"] {
  --bg: #0a0a14;
  --bg-image: linear-gradient(135deg, #0a0a14 0%, #12122a 40%, #0f1a2e 100%);
  --card-bg-rgb: 22, 24, 40;
  --card-border: rgba(50, 55, 80, 0.6);
  --card-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.5);
  --text: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #818cf8;
  --accent-hover: #6366f1;
  --accent-rgb: 129, 140, 248;
  --accent-light: rgba(129, 140, 248, 0.15);
}

[data-layout="compact"] {
  --layout-gap: 14px;
  --font-size: 13px;
}

[data-layout="loose"] {
  --layout-gap: 24px;
  --font-size: 14px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { font-size: var(--font-size); scroll-behavior: smooth; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition), color var(--transition);
  background-image: var(--bg-image);
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input { font-family: inherit; }
.hidden { display: none !important; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(var(--accent-rgb), 0.3); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(var(--accent-rgb), 0.5); }

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  height: var(--header-height);
  flex-shrink: 0;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.5px;
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.icon-btn:hover { background: var(--accent-light); color: var(--accent); }

.search-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 8px 20px 16px;
}

.search-tabs {
  display: flex;
  gap: 4px;
  background: rgba(var(--card-bg-rgb), 0.6);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 4px;
  backdrop-filter: blur(10px);
}

.search-tab {
  padding: 7px 22px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.search-tab.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.3);
}

.search-tab:not(.active):hover { color: var(--text); }

.search-box-wrapper { width: 100%; max-width: 680px; }

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(var(--card-bg-rgb), var(--card-opacity));
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 0 6px 0 18px;
  backdrop-filter: blur(12px);
  box-shadow: var(--card-shadow);
  transition: all var(--transition);
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light), var(--card-shadow);
}

.search-icon { color: var(--text-muted); flex-shrink: 0; }

#searchInput {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 1rem;
  padding: 14px 8px;
  color: var(--text);
}

#searchInput::placeholder { color: var(--text-muted); }

.search-submit {
  padding: 10px 24px;
  background: var(--accent);
  color: #fff;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  flex-shrink: 0;
}

.search-submit:hover { background: var(--accent-hover); }

.search-engines {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.engine-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--card-border);
  background: rgba(var(--card-bg-rgb), 0.5);
  color: var(--text-secondary);
  font-size: 0.82rem;
  transition: all var(--transition);
  backdrop-filter: blur(8px);
}

.engine-btn:hover { color: var(--text); border-color: var(--accent); }

.engine-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.25);
}

.engine-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.main-content {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(220px, 280px) 1fr minmax(260px, 320px);
  gap: var(--layout-gap);
  padding: 8px 28px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

.column { display: flex; flex-direction: column; gap: 12px; min-width: 0; }

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4px 6px;
}

.column-header h2 { font-size: 1.05rem; font-weight: 600; }

.column-actions { display: flex; gap: 6px; }

.small-btn {
  padding: 5px 12px;
  border-radius: 8px;
  font-size: 0.78rem;
  background: rgba(var(--card-bg-rgb), 0.6);
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.small-btn:hover { color: var(--accent); border-color: var(--accent); }

.primary-btn {
  width: 100%;
  padding: 10px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.primary-btn:hover { background: var(--accent-hover); }

.bookmarks-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 65vh;
  overflow-y: auto;
  padding-right: 4px;
}

.bookmark-group { display: flex; flex-direction: column; gap: 4px; }

.bookmark-group-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 4px 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.bookmark-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 10px;
  background: rgba(var(--card-bg-rgb), var(--card-opacity));
  border: 1px solid var(--card-border);
  transition: all var(--transition);
}

.bookmark-item:hover { border-color: var(--accent); transform: translateX(3px); }

.bookmark-favicon {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--accent-light);
  color: var(--accent);
}

.bookmark-title {
  flex: 1;
  font-size: 0.85rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bookmark-delete {
  opacity: 0;
  font-size: 1rem;
  color: var(--text-muted);
  transition: opacity var(--transition);
  flex-shrink: 0;
}

.bookmark-item:hover .bookmark-delete { opacity: 1; }
.bookmark-delete:hover { color: #ef4444; }

.empty-hint {
  padding: 20px 12px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  background: rgba(var(--card-bg-rgb), 0.4);
  border: 1px dashed var(--card-border);
  border-radius: 12px;
}

.tool-count { font-size: 0.78rem; color: var(--text-muted); }

.tools-grid {
  display: grid;
  grid-template-columns: repeat(var(--cards-per-row), 1fr);
  gap: 12px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px;
  border-radius: var(--card-radius);
  background: rgba(var(--card-bg-rgb), var(--card-opacity));
  border: 1px solid var(--card-border);
  color: var(--text);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  backdrop-filter: blur(8px);
}

.tool-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.tool-card:hover {
  border-color: var(--accent);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-3px);
}

.tool-card:hover::before { transform: scaleX(1); }

.tool-card.dragging { opacity: 0.4; }

.tool-card.drag-over { border-color: var(--accent); border-style: dashed; }

.tool-favicon {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--accent-light);
  color: var(--accent);
}

.tool-name { font-size: 0.88rem; font-weight: 600; }
.tool-desc { font-size: 0.74rem; color: var(--text-secondary); line-height: 1.4; }

.info-card {
  background: rgba(var(--card-bg-rgb), var(--card-opacity));
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: 18px;
  backdrop-filter: blur(10px);
  box-shadow: var(--card-shadow);
}

.clock-card { text-align: center; }

.clock-time {
  font-size: 2.4rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 1px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.clock-date { font-size: 0.82rem; color: var(--text-secondary); margin-top: 6px; }

.weather-card {
  display: flex;
  align-items: center;
  gap: 14px;
}

.weather-icon { font-size: 2.2rem; flex-shrink: 0; }

.weather-info { display: flex; flex-direction: column; gap: 2px; }

.weather-temp { font-size: 1.6rem; font-weight: 700; }
.weather-desc { font-size: 0.82rem; color: var(--text-secondary); }
.weather-city { font-size: 0.78rem; color: var(--text-muted); margin-left: auto; }

.hotsearch-card { display: flex; flex-direction: column; gap: 10px; }

.hotsearch-header h3 { font-size: 0.95rem; font-weight: 600; }

.hotsearch-tabs { display: flex; gap: 4px; }

.hotsearch-tab {
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.hotsearch-tab.active { background: var(--accent-light); color: var(--accent); }

.hotsearch-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 340px;
  overflow-y: auto;
  padding-right: 4px;
}

.hotsearch-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 6px;
  border-radius: 6px;
  font-size: 0.8rem;
  transition: background var(--transition);
}

.hotsearch-item:hover { background: var(--accent-light); }

.hotsearch-rank {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.hotsearch-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hotsearch-hot { font-size: 0.7rem; color: var(--text-muted); flex-shrink: 0; }

.loading-text { text-align: center; padding: 20px; color: var(--text-muted); font-size: 0.82rem; }

.footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 16px 20px 20px;
  flex-shrink: 0;
}

.footer-btn {
  padding: 8px 20px;
  border-radius: 10px;
  background: rgba(var(--card-bg-rgb), 0.7);
  border: 1px solid var(--card-border);
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--transition);
  backdrop-filter: blur(8px);
}

.footer-btn:hover { color: var(--accent); border-color: var(--accent); }

.footer-link {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.footer-link:hover { color: var(--accent); }

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  z-index: 100;
}

.overlay.show { opacity: 1; pointer-events: auto; }

.settings-panel {
  position: fixed;
  top: 0; right: 0;
  width: 400px;
  max-width: 90vw;
  height: 100vh;
  background: rgba(var(--card-bg-rgb), 0.98);
  backdrop-filter: blur(20px);
  border-left: 1px solid var(--card-border);
  transform: translateX(100%);
  transition: transform var(--transition);
  z-index: 101;
  display: flex;
  flex-direction: column;
}

.settings-panel.show { transform: translateX(0); }

.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--card-border);
  flex-shrink: 0;
}

.settings-header h2 { font-size: 1.1rem; font-weight: 600; }

.settings-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px 40px;
}

.setting-section { margin-bottom: 20px; }

.setting-section-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  gap: 12px;
}

.setting-label { font-size: 0.88rem; flex-shrink: 0; }

.setting-control { display: flex; align-items: center; gap: 8px; }

.setting-input {
  background: rgba(var(--card-bg-rgb), 0.6);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.85rem;
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
  width: 140px;
}

.setting-input:focus { border-color: var(--accent); }

.setting-select {
  background: rgba(var(--card-bg-rgb), 0.6);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.85rem;
  color: var(--text);
  outline: none;
  cursor: pointer;
}

.setting-range { width: 120px; }

.range-value { font-size: 0.78rem; color: var(--text-muted); width: 36px; text-align: right; }

.toggle-switch {
  position: relative;
  width: 42px;
  height: 24px;
  border-radius: 12px;
  background: var(--card-border);
  cursor: pointer;
  transition: background var(--transition);
}

.toggle-switch.on { background: var(--accent); }

.toggle-switch::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #fff;
  transition: transform var(--transition);
}

.toggle-switch.on::after { transform: translateX(18px); }

.bg-type-btns { display: flex; gap: 6px; flex-wrap: wrap; }

.bg-type-btn {
  padding: 5px 12px;
  border-radius: 8px;
  font-size: 0.78rem;
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  transition: all var(--transition);
}

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

.color-picker {
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 1px solid var(--card-border);
  cursor: pointer;
  overflow: hidden;
}

.color-picker input[type="color"] {
  width: 200%; height: 200%;
  transform: translate(-25%, -25%);
  border: none;
  cursor: pointer;
}

.tool-manage-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 360px;
  overflow-y: auto;
}

.tool-manage-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 8px;
  background: rgba(var(--card-bg-rgb), 0.4);
  border: 1px solid var(--card-border);
  transition: all var(--transition);
}

.tool-manage-item:hover { border-color: var(--accent); }

.drag-handle { cursor: grab; color: var(--text-muted); flex-shrink: 0; }
.drag-handle:active { cursor: grabbing; }

.tool-manage-name { flex: 1; font-size: 0.82rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.checkbox {
  width: 18px; height: 18px;
  border: 2px solid var(--card-border);
  border-radius: 5px;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.checkbox.checked { background: var(--accent); border-color: var(--accent); }
.checkbox.checked::after { content: ""; width: 5px; height: 9px; border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg) translate(-1px, -1px); }

.config-actions { display: flex; gap: 8px; }

.modal {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(var(--card-bg-rgb), 0.98);
  backdrop-filter: blur(20px);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  z-index: 101;
  width: 480px;
  max-width: 90vw;
  max-height: 86vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.message-modal { display: none; }
.message-modal.show { display: flex; animation: modalIn 0.22s ease; }

@keyframes modalIn {
  from { opacity: 0; transform: translate(-50%, -50%) scale(0.95); }
  to { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 22px;
  border-bottom: 1px solid var(--card-border);
}

.modal-header h2 { font-size: 1.1rem; font-weight: 600; }

.modal-body {
  padding: 22px;
  overflow-y: auto;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text);
}

.modal-body p { margin-bottom: 12px; }

.email-box {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 8px 0 16px;
  padding: 10px 16px;
  background: var(--accent-light);
  border-radius: 10px;
}

.email-text { font-weight: 600; color: var(--accent); flex: 1; }

.warning-text {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 10px 14px;
  background: rgba(245, 158, 11, 0.1);
  border-radius: 8px;
  border-left: 3px solid #f59e0b;
}

.modal-footer-info {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--card-border);
  text-align: right;
}

.modal-footer-info p { font-size: 0.82rem; color: var(--text-secondary); margin-bottom: 4px; }

.form-group { margin-bottom: 14px; }

.form-group label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  background: rgba(var(--card-bg-rgb), 0.6);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 0.88rem;
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
}

.form-group input:focus { border-color: var(--accent); }

.toast {
  position: fixed;
  bottom: 30px; left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(var(--card-bg-rgb), 0.98);
  backdrop-filter: blur(12px);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 10px 22px;
  font-size: 0.85rem;
  color: var(--text);
  box-shadow: var(--card-shadow-hover);
  z-index: 200;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
}

.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

.localStorage-warning {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: #f59e0b;
  color: #fff;
  text-align: center;
  padding: 8px;
  font-size: 0.82rem;
  z-index: 300;
}

@media (max-width: 1024px) {
  .main-content { grid-template-columns: 1fr; }
  .column-left .bookmarks-container { max-height: 240px; }
  .tools-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 640px) {
  .header { padding: 0 16px; }
  .site-title { font-size: 1.2rem; }
  .search-section { padding: 8px 12px 14px; }
  .search-box { padding: 0 4px 0 14px; }
  .search-submit { padding: 8px 16px; font-size: 0.82rem; }
  .main-content { padding: 8px 14px 16px; }
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .clock-time { font-size: 2rem; }
  .footer { gap: 12px; }
  .settings-panel { width: 100vw; }
}