:root {
  /* Liquid Glass tokens (default: bright) */
  --bg: #f6f8ff;
  --text: #0a0f1f;
  --muted: rgba(10, 15, 31, 0.72);
  --muted-2: rgba(10, 15, 31, 0.52);
  --border: rgba(10, 15, 31, 0.12);
  --shadow: rgba(13, 20, 40, 0.12);

  --glass: rgba(255, 255, 255, 0.58);
  --glass-2: rgba(255, 255, 255, 0.42);
  --glass-3: rgba(255, 255, 255, 0.28);
  --glass-stroke: rgba(255, 255, 255, 0.62);
  --glass-stroke-2: rgba(10, 15, 31, 0.10);

  --brand: #5c55ff;
  --brand-2: #00c2ff;
  --brand-3: #22e3b7;
  --hot: #ff4fd8;
  --sun: #ffcc4a;

  --radius: 18px;
  --radius-sm: 14px;
  --radius-lg: 26px;

  --sidebar-w: 304px;
  --max: 1320px;

  --blur: 18px;
  --blur-strong: 28px;
  --ring: 0 0 0 1px var(--border);
  --shine: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.88),
    rgba(255, 255, 255, 0.22) 42%,
    rgba(255, 255, 255, 0.06) 70%
  );
  --stroke-gradient: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.75),
    rgba(255, 255, 255, 0.18)
  );
}

[data-theme="dark"] {
  --bg: #070b16;
  --text: #eef2ff;
  --muted: rgba(238, 242, 255, 0.76);
  --muted-2: rgba(238, 242, 255, 0.54);
  --border: rgba(238, 242, 255, 0.12);
  --shadow: rgba(0, 0, 0, 0.35);

  --glass: rgba(16, 22, 44, 0.52);
  --glass-2: rgba(16, 22, 44, 0.38);
  --glass-3: rgba(16, 22, 44, 0.24);
  --glass-stroke: rgba(255, 255, 255, 0.18);
  --glass-stroke-2: rgba(0, 0, 0, 0.35);

  --stroke-gradient: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.22),
    rgba(255, 255, 255, 0.06)
  );
  --shine: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.18),
    rgba(255, 255, 255, 0.08) 40%,
    rgba(255, 255, 255, 0.03) 70%
  );
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", Segoe UI,
    Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  letter-spacing: 0.2px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Better scrollbars (safe on Chromium/WebKit, ignored elsewhere) */
*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
*::-webkit-scrollbar-thumb {
  background: rgba(10, 15, 31, 0.20);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: content-box;
}
*::-webkit-scrollbar-track {
  background: transparent;
}
[data-theme="dark"] *::-webkit-scrollbar-thumb {
  background: rgba(238, 242, 255, 0.16);
  background-clip: content-box;
}

a {
  color: inherit;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  /* Avoid negative z-index: can render behind the page background in some browsers */
  z-index: 0;
}

.bg__blob {
  position: absolute;
  filter: blur(40px);
  opacity: 0.85;
  transform: translateZ(0);
  will-change: transform;
  border-radius: 999px;
}

.bg__blob--a {
  width: 520px;
  height: 520px;
  left: -120px;
  top: -140px;
  background: radial-gradient(circle at 30% 30%, rgba(92, 85, 255, 0.65), transparent 60%),
    radial-gradient(circle at 70% 60%, rgba(0, 194, 255, 0.50), transparent 62%);
  animation: floatA 14s ease-in-out infinite;
}

.bg__blob--b {
  width: 520px;
  height: 520px;
  right: -160px;
  top: 120px;
  background: radial-gradient(circle at 35% 40%, rgba(34, 227, 183, 0.55), transparent 62%),
    radial-gradient(circle at 75% 65%, rgba(255, 79, 216, 0.36), transparent 66%);
  animation: floatB 18s ease-in-out infinite;
}

.bg__blob--c {
  width: 640px;
  height: 640px;
  left: 20%;
  bottom: -260px;
  background: radial-gradient(circle at 40% 35%, rgba(255, 204, 74, 0.52), transparent 62%),
    radial-gradient(circle at 70% 60%, rgba(92, 85, 255, 0.34), transparent 68%);
  animation: floatC 20s ease-in-out infinite;
}

.bg__grid {
  position: absolute;
  inset: 0;
  opacity: 0.22;
  background-image: linear-gradient(to right, rgba(10, 15, 31, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(10, 15, 31, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at 50% 10%, rgba(0, 0, 0, 1), transparent 55%);
}

[data-theme="dark"] .bg__grid {
  opacity: 0.16;
  background-image: linear-gradient(to right, rgba(238, 242, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(238, 242, 255, 0.05) 1px, transparent 1px);
}

.bg__noise {
  position: absolute;
  inset: 0;
  opacity: 0.11;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)' opacity='.25'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

[data-theme="dark"] .bg__noise {
  opacity: 0.18;
  mix-blend-mode: overlay;
}

.bg__vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(1200px 640px at 50% 0%, transparent 40%, rgba(0, 0, 0, 0.08) 100%);
  opacity: 0.6;
}

[data-theme="dark"] .bg__vignette {
  background: radial-gradient(1200px 640px at 50% 0%, transparent 35%, rgba(0, 0, 0, 0.34) 100%);
  opacity: 0.8;
}

@keyframes floatA {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(40px, 26px) scale(1.05);
  }
}

@keyframes floatB {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-36px, 20px) scale(1.06);
  }
}

@keyframes floatC {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(18px, -24px) scale(1.04);
  }
}

.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  border-right: 1px solid rgba(10, 15, 31, 0.10);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.08)), var(--glass);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
}

.sidebar__top {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--glass-stroke-2);
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  min-width: 0;
}

.brand__mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: conic-gradient(from 220deg, var(--brand), var(--brand-2), var(--brand-3), var(--hot), var(--brand));
  box-shadow: 0 18px 40px rgba(92, 85, 255, 0.22), 0 12px 24px var(--shadow);
  font-weight: 800;
}

.brand__text {
  min-width: 0;
}

.brand__title {
  font-weight: 800;
  line-height: 1.1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand__sub {
  margin-top: 2px;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__close {
  display: none;
  border: 1px solid var(--glass-stroke-2);
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  color: var(--muted);
  border-radius: 10px;
  width: 36px;
  height: 36px;
  cursor: pointer;
}

.sidebar__nav {
  padding: 10px 8px 10px;
  height: calc(100vh - 120px);
  overflow: auto;
}

.sidebar__bottom {
  padding: 12px 12px 16px;
  border-top: 1px solid var(--border);
  display: grid;
  gap: 10px;
}

.navgroup {
  margin: 10px 0 14px;
}

.navgroup__title {
  font-size: 12px;
  color: var(--muted-2);
  padding: 8px 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.navitem,
.navsubitem {
  display: flex;
  gap: 10px;
  align-items: center;
  width: 100%;
  text-decoration: none;
  border-radius: 12px;
  padding: 10px 10px;
  color: var(--muted);
  border: 1px solid transparent;
  position: relative;
}

.navitem:hover,
.navsubitem:hover {
  background: rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  color: var(--text);
}

.navitem[data-active="true"],
.navsubitem[data-active="true"] {
  background: linear-gradient(135deg, rgba(92, 85, 255, 0.22), rgba(0, 194, 255, 0.14));
  border-color: rgba(92, 85, 255, 0.22);
  color: var(--text);
}

.navitem__chev {
  margin-left: auto;
  color: var(--muted-2);
  width: 28px;
  height: 28px;
  display: inline-grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid rgba(10, 15, 31, 0.08);
  background: rgba(255, 255, 255, 0.18);
  cursor: pointer;
  user-select: none;
}

.navchildren {
  margin: 6px 0 10px 8px;
  padding-left: 8px;
  border-left: 1px dashed rgba(10, 15, 31, 0.14);
  display: none;
}

.navchildren[data-open="true"] {
  display: block;
}

.main {
  min-width: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--glass-stroke-2);
  background: rgba(255, 255, 255, 0.48);
  backdrop-filter: blur(var(--blur-strong));
  -webkit-backdrop-filter: blur(var(--blur-strong));
}

[data-theme="dark"] .topbar {
  background: rgba(12, 16, 33, 0.46);
}

.iconbtn {
  border: 1px solid rgba(10, 15, 31, 0.12);
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  color: var(--muted);
  border-radius: 12px;
  height: 40px;
  width: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  cursor: pointer;
}

.iconbtn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.28);
}

.topbar__search {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.search {
  width: 100%;
  height: 40px;
  border: 1px solid rgba(10, 15, 31, 0.12);
  background: rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(var(--blur-strong));
  -webkit-backdrop-filter: blur(var(--blur-strong));
  color: var(--text);
  border-radius: 12px;
  padding: 0 14px;
  outline: none;
}

.search::placeholder {
  color: var(--muted-2);
}

.pill {
  border: 1px solid rgba(10, 15, 31, 0.12);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--muted);
  font-size: 12px;
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 12px;
  border-radius: 12px;
  border: 1px solid rgba(10, 15, 31, 0.12);
  text-decoration: none;
  cursor: pointer;
  background: linear-gradient(135deg, rgba(92, 85, 255, 0.22), rgba(0, 194, 255, 0.12));
  color: var(--text);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.12);
  color: var(--muted);
}

.btn--ghost:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.22);
}

.content {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 16px 50px;
}

.section {
  margin: 14px 0 28px;
  padding: 16px;
  border: 1px solid rgba(10, 15, 31, 0.12);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.20)), var(--glass);
  box-shadow: 0 30px 70px rgba(13, 20, 40, 0.10);
  backdrop-filter: blur(var(--blur-strong));
  -webkit-backdrop-filter: blur(var(--blur-strong));
  position: relative;
  overflow: hidden;
}

.section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: var(--shine);
  opacity: 0.55;
  mix-blend-mode: soft-light;
}

.section::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  padding: 1px;
  background: var(--stroke-gradient);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0.55;
}

.section__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.section__title {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.2px;
}

.section__meta {
  font-size: 12px;
  color: var(--muted-2);
}

.tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 10px 0 14px;
}

.tabbtn {
  border: 1px solid rgba(10, 15, 31, 0.12);
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 13px;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
}

.tabbtn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.28);
  transform: translateY(-1px);
}

.tabbtn[data-active="true"] {
  color: var(--text);
  border-color: rgba(92, 85, 255, 0.28);
  background: linear-gradient(135deg, rgba(92, 85, 255, 0.22), rgba(0, 194, 255, 0.14));
}

.tabpanel {
  display: none;
}

.tabpanel[data-active="true"] {
  display: block;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.card {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px;
  border: 1px solid rgba(10, 15, 31, 0.12);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.48), rgba(255, 255, 255, 0.14)), var(--glass-2);
  text-decoration: none;
  transition: transform 150ms ease, border-color 150ms ease, background 150ms ease, box-shadow 150ms ease;
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(92, 85, 255, 0.28);
  box-shadow: 0 18px 40px rgba(92, 85, 255, 0.12), 0 16px 40px rgba(0, 0, 0, 0.08);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(600px 180px at 0% 0%, rgba(255, 255, 255, 0.55), transparent 55%);
  opacity: 0.55;
  pointer-events: none;
}

.favicon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(10, 15, 31, 0.10);
  background: rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  overflow: hidden;
}

.favicon img {
  width: 24px;
  height: 24px;
  display: block;
}

/* Favicon fallback: shown when <img> fails to load */
.favicon__fallback {
  width: 100%;
  height: 100%;
  display: none;
  place-items: center;
}

.card__title {
  font-weight: 800;
  line-height: 1.2;
  margin-top: 1px;
  /* Clamp long titles so cards don't become extremely tall */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow: hidden;
  /* Fallback when line-clamp isn't supported */
  max-height: calc(1.2em * 2);
}

.card__desc {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  /* Fallback when line-clamp isn't supported */
  max-height: calc(1.35em * 2);
}

.card__url {
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted-2);
  /* Keep URL line tidy */
  display: block;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.notice {
  max-width: var(--max);
  margin: 18px auto 0;
  padding: 14px 16px;
  border: 1px solid rgba(255, 92, 122, 0.24);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.45), rgba(255, 92, 122, 0.06));
  backdrop-filter: blur(var(--blur-strong));
  -webkit-backdrop-filter: blur(var(--blur-strong));
}

.notice__title {
  font-weight: 800;
}

.notice__desc {
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.5;
}

.results {
  max-width: var(--max);
  margin: 18px auto 0;
  padding: 16px;
  border: 1px solid rgba(10, 15, 31, 0.12);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.52), rgba(255, 255, 255, 0.18)), var(--glass);
  backdrop-filter: blur(var(--blur-strong));
  -webkit-backdrop-filter: blur(var(--blur-strong));
}

.results__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.results__title {
  font-weight: 800;
}

.results__meta {
  font-size: 12px;
  color: var(--muted-2);
}

@media (max-width: 1100px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    transform: translateX(-100%);
    transition: transform 180ms ease;
    width: min(var(--sidebar-w), 90vw);
    z-index: 50;
    box-shadow: 0 40px 90px rgba(0, 0, 0, 0.25);
  }

  .sidebar[data-open="true"] {
    transform: translateX(0);
  }

  .sidebar__close {
    display: inline-grid;
    place-items: center;
  }

  .topbar {
    grid-template-columns: auto 1fr;
  }

  .topbar__right {
    display: none;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bg__blob {
    animation: none !important;
  }
  .card,
  .tabbtn {
    transition: none !important;
  }
}



/* ============================================================================
   NEW FEATURES STYLES - 新功能样式
   ============================================================================ */

/* 收藏颜色变量 */
:root {
  --favorite: #f59e0b;
  --favorite-hover: #d97706;
  --broken: #ef4444;
  --highlight-bg: rgba(251, 191, 36, 0.3);
}

[data-theme="dark"] {
  --favorite: #fbbf24;
  --favorite-hover: #f59e0b;
  --highlight-bg: rgba(251, 191, 36, 0.25);
}

/* ============================================================================
   SIDEBAR ENHANCEMENTS - 侧边栏增强
   ============================================================================ */

.navgroup--special {
  margin: 6px 0;
  position: relative;
}

.navitem--special {
  font-weight: 600;
}

.navitem__count {
  margin-left: auto;
  font-size: 12px;
  color: var(--muted-2);
  font-weight: 400;
}

.navitem__clear {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--muted-2);
  font-size: 11px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  opacity: 0;
  transition: opacity 150ms ease;
}

.navgroup--special:hover .navitem__clear {
  opacity: 1;
}

.navitem__clear:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--broken);
}

.nav-divider {
  height: 1px;
  background: var(--border);
  margin: 12px 10px;
}

/* ============================================================================
   CARD ENHANCEMENTS - 卡片增强
   ============================================================================ */

.card__body {
  position: relative;
  min-width: 0;
}

.card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.card__fav {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--muted-2);
  font-size: 16px;
  cursor: pointer;
  padding: 2px;
  line-height: 1;
  opacity: 0;
  transition: opacity 150ms ease, color 150ms ease, transform 150ms ease;
}

.card:hover .card__fav,
.card__fav--active {
  opacity: 1;
}

.card__fav:hover {
  color: var(--favorite);
  transform: scale(1.2);
}

.card__fav--active {
  color: var(--favorite);
}

.card__context {
  margin-top: 4px;
  font-size: 11px;
  color: var(--muted-2);
}

.card--broken {
  border-color: rgba(239, 68, 68, 0.3);
}

.card--broken::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(239, 68, 68, 0.05);
  pointer-events: none;
  border-radius: inherit;
}

.card__broken-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  font-size: 12px;
}

/* 默认 favicon 图标 */
.favicon--default {
  background: linear-gradient(135deg, hsl(var(--hue, 200), 70%, 60%), hsl(var(--hue, 200), 70%, 45%));
  color: white;
  font-weight: 700;
  font-size: 18px;
}

/* 搜索高亮 */
.highlight {
  background: var(--highlight-bg);
  padding: 1px 2px;
  border-radius: 3px;
}

/* ============================================================================
   VIEW MODE STYLES - 视图模式样式
   ============================================================================ */

.view-mode-btns {
  display: flex;
  gap: 4px;
  margin-right: 10px;
}

.view-mode-btn {
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  cursor: pointer;
  color: var(--muted);
  font-size: 14px;
  display: grid;
  place-items: center;
  transition: all 150ms ease;
}

.view-mode-btn:hover {
  background: rgba(255, 255, 255, 0.22);
  color: var(--text);
}

.view-mode-btn[data-active="true"] {
  background: linear-gradient(135deg, rgba(92, 85, 255, 0.22), rgba(0, 194, 255, 0.14));
  border-color: rgba(92, 85, 255, 0.28);
  color: var(--text);
}

/* 紧凑模式 */
[data-view-mode="compact"] .grid {
  grid-template-columns: 1fr;
  gap: 8px;
}

[data-view-mode="compact"] .card {
  grid-template-columns: 32px 1fr auto;
  padding: 10px 12px;
  align-items: center;
  /* Compact mode uses a hover "tooltip" description; allow it to overflow */
  overflow: visible;
}

[data-view-mode="compact"] .favicon {
  width: 32px;
  height: 32px;
}

[data-view-mode="compact"] .favicon img {
  width: 20px;
  height: 20px;
}

[data-view-mode="compact"] .card__desc {
  display: none;
}

[data-view-mode="compact"] .card:hover .card__desc {
  display: block;
  position: absolute;
  left: 0;
  top: 100%;
  background: var(--glass);
  backdrop-filter: blur(var(--blur));
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px var(--shadow);
  z-index: 10;
  max-width: 300px;
  margin-top: 4px;
}

/* The section container also used to clip the compact tooltip */
[data-view-mode="compact"] .section {
  overflow: visible;
}

[data-view-mode="compact"] .card__url {
  margin-top: 0;
  margin-left: auto;
}

[data-view-mode="compact"] .card__header {
  flex: 1;
  min-width: 0;
}

[data-view-mode="compact"] .card__title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 大卡片模式 */
[data-view-mode="large"] .grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

[data-view-mode="large"] .card {
  grid-template-columns: 56px 1fr;
  padding: 16px;
}

[data-view-mode="large"] .favicon {
  width: 56px;
  height: 56px;
}

[data-view-mode="large"] .favicon img {
  width: 32px;
  height: 32px;
}

[data-view-mode="large"] .card__desc {
  /* Large mode should still be bounded; otherwise cards become huge */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  overflow: hidden;
  max-height: calc(1.35em * 3);
}

[data-view-mode="large"] .card__title {
  font-size: 16px;
}

/* ============================================================================
   SEARCH HISTORY DROPDOWN - 搜索历史下拉
   ============================================================================ */

.topbar__search {
  position: relative;
}

.search-history-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 40px;
  margin-top: 4px;
  background: var(--glass);
  backdrop-filter: blur(var(--blur-strong));
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 20px 50px var(--shadow);
  z-index: 100;
  overflow: hidden;
}

.search-history-dropdown[hidden] {
  display: none;
}

.search-history__title {
  padding: 10px 14px 6px;
  font-size: 11px;
  color: var(--muted-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.search-history__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  cursor: pointer;
  transition: background 150ms ease;
}

.search-history__item:hover {
  background: rgba(255, 255, 255, 0.15);
}

.search-history__remove {
  background: none;
  border: none;
  color: var(--muted-2);
  cursor: pointer;
  padding: 2px 6px;
  font-size: 12px;
  opacity: 0;
  transition: opacity 150ms ease;
}

.search-history__item:hover .search-history__remove {
  opacity: 1;
}

.search-history__remove:hover {
  color: var(--broken);
}

.search-history__clear {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--muted-2);
  cursor: pointer;
  border-top: 1px solid var(--border);
  text-align: center;
}

.search-history__clear:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}

/* ============================================================================
   MODAL - 弹窗样式
   ============================================================================ */

.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
}

.modal[data-visible="true"] {
  display: flex;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal__content {
  position: relative;
  background: var(--glass);
  backdrop-filter: blur(var(--blur-strong));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.3);
  min-width: 280px;
  max-width: 90vw;
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
}

.modal__close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 16px;
  padding: 4px;
}

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

.modal__body {
  padding: 16px 20px;
}

.shortcut-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 0;
}

.shortcut-item kbd {
  display: inline-block;
  min-width: 32px;
  padding: 4px 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: inherit;
  font-size: 12px;
  text-align: center;
}

/* ============================================================================
   SIDEBAR OVERLAY - 侧边栏遮罩
   ============================================================================ */

.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(2px);
  z-index: 40;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.sidebar-overlay[data-visible="true"] {
  opacity: 1;
  pointer-events: auto;
}

@media (min-width: 821px) {
  .sidebar-overlay {
    display: none;
  }
}

/* ============================================================================
   EMPTY STATE - 空状态
   ============================================================================ */

.section--empty {
  text-align: center;
  padding: 40px 20px;
}

.empty-state {
  padding: 30px 0;
}

.empty-state__icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state__text {
  font-size: 16px;
  color: var(--muted);
  margin-bottom: 8px;
}

.empty-state__hint {
  font-size: 13px;
  color: var(--muted-2);
}

/* ============================================================================
   RESPONSIVE ENHANCEMENTS - 响应式增强
   ============================================================================ */

@media (max-width: 820px) {
  .topbar__right {
    display: flex;
    gap: 8px;
  }

  .view-mode-btns {
    display: none;
  }

  .pill {
    display: none;
  }

  .topbar__search {
    grid-column: 1 / -1;
    order: 1;
  }

  .topbar {
    grid-template-columns: auto auto;
    grid-template-rows: auto auto;
  }

  [data-view-mode="large"] .grid {
    grid-template-columns: 1fr;
  }

  /* 移动端搜索框优化 */
  .search {
    width: 100%;
    height: 44px;
    font-size: 16px; /* 防止 iOS 缩放 */
  }

  /* 移动端卡片点击区域优化 */
  .card {
    min-height: 72px;
  }

  .card__fav {
    opacity: 1;
    padding: 8px;
    margin: -8px;
  }
}

@media (max-width: 600px) {
  .card {
    padding: 10px;
  }

  .section {
    padding: 12px;
    margin: 10px 0 20px;
  }

  .content {
    padding: 12px 10px 40px;
  }

  /* 小屏幕卡片优化 */
  .card__title {
    font-size: 14px;
  }

  .card__desc {
    font-size: 11px;
  }
}

/* 平板响应式 */
@media (min-width: 600px) and (max-width: 820px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 大屏幕优化 */
@media (min-width: 1400px) {
  .grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  [data-view-mode="large"] .grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ============================================================================
   VISUAL ENHANCEMENTS - 视觉优化
   ============================================================================ */

/* 优化暗色模式对比度 */
[data-theme="dark"] .card {
  background: linear-gradient(180deg, rgba(30, 40, 70, 0.48), rgba(20, 28, 55, 0.28)), var(--glass-2);
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .card:hover {
  border-color: rgba(92, 85, 255, 0.35);
  box-shadow: 0 18px 40px rgba(92, 85, 255, 0.15), 0 16px 40px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .section {
  background: linear-gradient(180deg, rgba(30, 40, 70, 0.55), rgba(20, 28, 55, 0.30)), var(--glass);
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .sidebar {
  background: linear-gradient(180deg, rgba(20, 28, 55, 0.85), rgba(12, 18, 38, 0.75)), var(--glass);
  border-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .navitem:hover,
[data-theme="dark"] .navsubitem:hover {
  background: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .search {
  background: rgba(30, 40, 70, 0.4);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .iconbtn {
  background: rgba(30, 40, 70, 0.4);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .iconbtn:hover {
  background: rgba(50, 60, 90, 0.5);
}

[data-theme="dark"] .tabbtn {
  background: rgba(30, 40, 70, 0.4);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .tabbtn:hover {
  background: rgba(50, 60, 90, 0.5);
}

[data-theme="dark"] .view-mode-btn {
  background: rgba(30, 40, 70, 0.4);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .view-mode-btn:hover {
  background: rgba(50, 60, 90, 0.5);
}

[data-theme="dark"] .search-history-dropdown {
  background: rgba(20, 28, 55, 0.95);
}

[data-theme="dark"] .search-history__item:hover {
  background: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .modal__content {
  background: rgba(20, 28, 55, 0.95);
}

[data-theme="dark"] .shortcut-item kbd {
  background: rgba(255, 255, 255, 0.08);
}

/* 卡片阴影和边框优化 */
.card {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.06);
}

.card:hover {
  box-shadow: 0 20px 50px rgba(92, 85, 255, 0.12), 0 8px 20px rgba(0, 0, 0, 0.08);
}

/* 统一圆角 */
.card,
.section,
.search,
.iconbtn,
.tabbtn,
.view-mode-btn,
.modal__content,
.search-history-dropdown {
  border-radius: var(--radius);
}

.section {
  border-radius: var(--radius-lg);
}

/* 统一间距 */
.grid {
  gap: 14px;
}

[data-view-mode="compact"] .grid {
  gap: 8px;
}

[data-view-mode="large"] .grid {
  gap: 18px;
}

/* 主题切换按钮样式 */
#themeToggleBtn {
  font-size: 16px;
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
  .card__fav {
    opacity: 1;
  }

  .navitem__clear {
    opacity: 1;
  }

  .search-history__remove {
    opacity: 1;
  }
}

/* 打印样式 */
@media print {
  .bg,
  .sidebar,
  .topbar,
  .sidebar-overlay,
  .modal {
    display: none !important;
  }

  .app {
    display: block;
  }

  .content {
    max-width: 100%;
    padding: 0;
  }

  .card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ddd;
  }
}