:root {
  /* 天蓝主题：截图色 #7EB6FF → #A1C4FD，正文对比 #1A1C1E */
  --bg: #ecf3fc;
  --surface: #ffffff;
  --text: #1a1c1e;
  --muted: #5c6370;
  --border: #c6daf0;
  --border-hover: #a8c4e8;
  --chip-bg: #e8f2fc;
  --link: #1e56b8;
  --link-visited: #5c3ead;
  --danger: #d93025;
  --accent: #5e93f0;
  --accent-2: #7eb6ff;
  --accent-hover: #4a7fd4;
  --accent-soft: rgba(126, 182, 255, 0.22);
  --focus-ring: rgba(94, 147, 240, 0.35);
  --accent-gradient: linear-gradient(135deg, #5e93f0, #79b4ff 45%, #a1c4fd);
  --accent-gradient-soft: linear-gradient(
    135deg,
    rgba(94, 147, 240, 0.2),
    rgba(126, 182, 255, 0.14),
    rgba(161, 196, 253, 0.14)
  );
  --wave-1: rgba(126, 182, 255, 0.38);
  --wave-2: rgba(94, 147, 240, 0.24);
  --wave-3: rgba(161, 196, 253, 0.42);
  --decor-grid: rgba(26, 28, 30, 0.065);
  --decor-spark: rgba(94, 147, 240, 0.62);
  --shadow-sm: 0 1px 2px rgba(60, 64, 67, 0.08);
  --shadow-md: 0 1px 6px rgba(60, 64, 67, 0.12);
  --shadow-lg: 0 8px 24px rgba(60, 64, 67, 0.12);
  --radius-pill: 999px;
  --radius-card: 16px;
  --radius-input: 24px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 0.2s;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171e2b;
    --surface: #232e40;
    --text: #e8eef8;
    --muted: #9eb0c8;
    --border: #3d4f66;
    --border-hover: #9ec5ff;
    --chip-bg: #2a3548;
    --link: #9ec5ff;
    --link-visited: #c9b4ff;
    --danger: #f28b82;
    --accent: #7eb6ff;
    --accent-2: #a1c4fd;
    --accent-hover: #bcd6ff;
    --accent-soft: rgba(126, 182, 255, 0.2);
    --focus-ring: rgba(126, 182, 255, 0.42);
    --accent-gradient: linear-gradient(135deg, #6ba3ff, #8eb9ff 45%, #b8d4fe);
    --accent-gradient-soft: linear-gradient(
      135deg,
      rgba(126, 182, 255, 0.22),
      rgba(161, 196, 253, 0.16),
      rgba(184, 212, 254, 0.14)
    );
    --wave-1: rgba(126, 182, 255, 0.28);
    --wave-2: rgba(161, 196, 253, 0.2);
    --wave-3: rgba(94, 147, 240, 0.22);
    --decor-grid: rgba(232, 238, 248, 0.055);
    --decor-spark: rgba(161, 196, 253, 0.72);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.45);
  }

  .search-btn:not(.search-btn--primary) {
    background: var(--chip-bg);
    color: var(--text);
  }

  .search-btn:not(.search-btn--primary):hover:not(:disabled) {
    background: #354560;
  }

  .pagination button {
    background: var(--surface);
    color: var(--text);
  }

  .pagination button:hover:not(:disabled) {
    background: #2f3c52;
  }

  .result-snippet {
    color: #bdc1c6;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body.page-home,
body.page-search {
  position: relative;
  overflow-x: hidden;
}

/* ----- 海浪背景（纯 CSS + 可平铺 SVG mask） ----- */
.wave-bg {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  height: clamp(200px, 42vh, 480px);
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.wave-layer {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 200%;
  height: 100%;
  background-repeat: repeat-x;
  background-position: 0 100%;
  background-size: 50% 100%;
  -webkit-mask-repeat: repeat-x;
  mask-repeat: repeat-x;
  -webkit-mask-position: 0 100%;
  mask-position: 0 100%;
  -webkit-mask-size: 50% 100%;
  mask-size: 50% 100%;
  will-change: transform;
  animation-name: wave-slide;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

.wave-layer--1 {
  background-color: var(--wave-1);
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 100' preserveAspectRatio='none'%3E%3Cpath fill='black' d='M0,55 C200,18 400,92 600,55 C800,18 1000,92 1200,55 L1200,100 L0,100 Z'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 100' preserveAspectRatio='none'%3E%3Cpath fill='black' d='M0,55 C200,18 400,92 600,55 C800,18 1000,92 1200,55 L1200,100 L0,100 Z'/%3E%3C/svg%3E");
  animation-duration: 22s;
  opacity: 0.95;
}

.wave-layer--2 {
  background-color: var(--wave-2);
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 100' preserveAspectRatio='none'%3E%3Cpath fill='black' d='M0,48 C200,86 400,10 600,48 C800,86 1000,10 1200,48 L1200,100 L0,100 Z'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 100' preserveAspectRatio='none'%3E%3Cpath fill='black' d='M0,48 C200,86 400,10 600,48 C800,86 1000,10 1200,48 L1200,100 L0,100 Z'/%3E%3C/svg%3E");
  animation-duration: 16s;
  animation-direction: reverse;
  opacity: 0.88;
}

.wave-layer--3 {
  background-color: var(--wave-3);
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 100' preserveAspectRatio='none'%3E%3Cpath fill='black' d='M0,52 C200,26 400,78 600,52 C800,26 1000,78 1200,52 L1200,100 L0,100 Z'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 100' preserveAspectRatio='none'%3E%3Cpath fill='black' d='M0,52 C200,26 400,78 600,52 C800,26 1000,78 1200,52 L1200,100 L0,100 Z'/%3E%3C/svg%3E");
  animation-duration: 11s;
  opacity: 0.82;
}

@keyframes wave-slide {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* ----- 氛围装饰：网格、日冕、光斑、星点 ----- */
.ambient-decor {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  overflow: hidden;
}

.ambient-mesh {
  position: absolute;
  inset: -1px;
  opacity: 1;
  background-image:
    linear-gradient(var(--decor-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--decor-grid) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse 85% 70% at 50% 35%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 85% 70% at 50% 35%, #000 0%, transparent 72%);
}

.ambient-corona {
  position: absolute;
  top: -18%;
  left: 50%;
  width: min(140vw, 2000px);
  height: min(85vh, 780px);
  transform: translateX(-50%);
  background: radial-gradient(ellipse 50% 42% at 50% 0%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 68%);
  animation: corona-breathe 18s var(--ease-out) infinite alternate;
  will-change: opacity, transform;
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(46px);
  opacity: 0.42;
  animation: ambient-drift 22s var(--ease-out) infinite alternate;
  will-change: transform;
}

.ambient-orb--1 {
  width: min(42vmin, 380px);
  height: min(42vmin, 380px);
  top: 8%;
  left: -8%;
  background: radial-gradient(circle at 35% 35%, rgba(94, 147, 240, 0.48), transparent 62%);
  animation-duration: 26s;
  animation-delay: -4s;
}

.ambient-orb--2 {
  width: min(36vmin, 320px);
  height: min(36vmin, 320px);
  top: 22%;
  right: -6%;
  background: radial-gradient(circle at 40% 40%, rgba(161, 196, 253, 0.4), transparent 58%);
  animation-duration: 20s;
  animation-direction: alternate-reverse;
  animation-delay: -2s;
  opacity: 0.38;
}

.ambient-orb--3 {
  width: min(48vmin, 420px);
  height: min(48vmin, 420px);
  bottom: 18%;
  left: 12%;
  background: radial-gradient(circle at 50% 45%, color-mix(in srgb, var(--accent) 50%, transparent), transparent 60%);
  animation-duration: 24s;
  animation-delay: -7s;
  opacity: 0.36;
}

.ambient-orb--4 {
  width: min(28vmin, 260px);
  height: min(28vmin, 260px);
  top: 48%;
  left: 42%;
  background: radial-gradient(circle at 50% 50%, rgba(135, 190, 255, 0.32), transparent 55%);
  animation-duration: 17s;
  animation-direction: alternate-reverse;
  opacity: 0.32;
  filter: blur(38px);
}

.ambient-orb--5 {
  width: min(32vmin, 300px);
  height: min(32vmin, 300px);
  bottom: 8%;
  right: 18%;
  background: radial-gradient(circle at 55% 40%, rgba(200, 218, 255, 0.28), transparent 58%);
  animation-duration: 21s;
  animation-delay: -5s;
  opacity: 0.34;
}

.ambient-spark {
  position: absolute;
  left: var(--as-x, 50%);
  top: var(--as-y, 30%);
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--decor-spark);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--decor-spark) 35%, transparent),
    0 0 18px 4px color-mix(in srgb, var(--decor-spark) 25%, transparent);
  opacity: 0;
  animation: spark-twinkle 4.2s var(--ease-out) infinite;
  animation-delay: var(--as-d, 0s);
}

@keyframes corona-breathe {
  0% {
    opacity: 0.65;
    transform: translateX(-50%) scale(1);
  }
  100% {
    opacity: 1;
    transform: translateX(-50%) scale(1.06);
  }
}

@keyframes ambient-drift {
  0% {
    transform: translate(0, 0) scale(1);
  }
  100% {
    transform: translate(2.5%, -2.8%) scale(1.05);
  }
}

@keyframes spark-twinkle {
  0%,
  100% {
    opacity: 0;
    transform: scale(0.65);
  }
  35% {
    opacity: 0.85;
    transform: scale(1);
  }
  55% {
    opacity: 0.35;
    transform: scale(0.9);
  }
}

body.page-home::before,
body.page-home::after,
body.page-search::before,
body.page-search::after {
  content: "";
  position: fixed;
  inset: -15vmax;
  z-index: -1;
  pointer-events: none;
  will-change: transform, opacity, filter;
}

body.page-home::before,
body.page-search::before {
  background:
    radial-gradient(34vmax 30vmax at 18% 22%, rgba(126, 182, 255, 0.22), transparent 72%),
    radial-gradient(42vmax 36vmax at 82% 26%, rgba(161, 196, 253, 0.2), transparent 74%);
  animation: bg-float-a 16s var(--ease-out) infinite alternate;
}

body.page-home::after,
body.page-search::after {
  background:
    radial-gradient(30vmax 26vmax at 30% 82%, rgba(135, 185, 255, 0.14), transparent 72%),
    radial-gradient(40vmax 34vmax at 78% 78%, rgba(180, 210, 255, 0.12), transparent 74%);
  filter: blur(1px);
  animation: bg-float-b 20s var(--ease-out) infinite alternate;
}

body.page-home {
  background:
    radial-gradient(ellipse 90% 55% at 50% -18%, var(--accent-soft), transparent 58%),
    radial-gradient(ellipse 50% 35% at 100% 20%, rgba(126, 182, 255, 0.1), transparent 50%),
    linear-gradient(180deg, #f5f9ff 0%, #e8f2fc 48%, #e2eefb 100%);
}

@media (prefers-color-scheme: dark) {
  body.page-home {
    background:
      radial-gradient(ellipse 90% 55% at 50% -18%, var(--accent-soft), transparent 58%),
      linear-gradient(180deg, #1c2333 0%, #171e2b 55%, #141b27 100%);
  }
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:visited {
  color: var(--link-visited);
}

.container {
  width: min(100%, 1100px);
  margin: 0 auto;
}

.page-shell {
  width: min(100%, 1000px);
}

/* ----- 首页 ----- */
.home {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 32px 0 48px;
}

.home-card {
  position: relative;
  z-index: 0;
  isolation: isolate;
  width: min(100%, 640px);
  text-align: center;
  animation: fade-in-up 0.55s var(--ease-out) both;
  padding: clamp(22px, 4.2vw, 38px) clamp(18px, 3.2vw, 34px);
  border-radius: 26px;
  background: color-mix(in srgb, var(--surface) 72%, transparent);
  border: 1px solid color-mix(in srgb, var(--border) 48%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow:
    var(--shadow-lg),
    0 1px 0 rgba(255, 255, 255, 0.55) inset;
}

body.page-home .home-card::after {
  content: "";
  position: absolute;
  inset: -2px;
  z-index: -1;
  border-radius: 28px;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--accent) 28%, transparent),
    color-mix(in srgb, var(--accent-2) 32%, transparent) 45%,
    color-mix(in srgb, #a1c4fd 22%, transparent)
  );
  opacity: 0.45;
  filter: blur(14px);
  pointer-events: none;
}

@media (prefers-color-scheme: dark) {
  body.page-home .home-card {
    background: color-mix(in srgb, var(--surface) 64%, transparent);
    box-shadow:
      var(--shadow-lg),
      0 1px 0 rgba(255, 255, 255, 0.06) inset;
  }

  body.page-home .home-card::after {
    opacity: 0.55;
  }

  .page-header-card,
  .advanced-details,
  .result-item,
  .doc-content,
  .empty-state {
    background: color-mix(in srgb, var(--surface) 86%, transparent);
    border-color: color-mix(in srgb, var(--border) 72%, transparent);
  }

  .search-input-wrap,
  .field-label input,
  .filter-input,
  .filter-select {
    background: color-mix(in srgb, var(--chip-bg) 82%, var(--surface) 18%);
    border-color: color-mix(in srgb, var(--border) 86%, transparent);
  }

  .search-input::placeholder,
  .field-label input::placeholder,
  .filter-input::placeholder {
    color: color-mix(in srgb, var(--muted) 88%, #ffffff 12%);
    opacity: 1;
  }

  .result-url,
  .result-meta {
    color: color-mix(in srgb, var(--muted) 82%, #ffffff 18%);
  }

  .result-snippet {
    color: color-mix(in srgb, var(--text) 78%, var(--muted) 22%);
  }
}

.logo {
  display: inline-block;
  font-size: clamp(2.25rem, 6vw, 3.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 28px;
  color: var(--text);
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .logo {
    background: linear-gradient(120deg, var(--text) 0%, var(--accent) 160%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
  }

  @media (prefers-color-scheme: dark) {
    .logo {
      background: none;
      -webkit-text-fill-color: currentColor;
      color: var(--text);
    }
  }
}

.search-form {
  display: flex;
  gap: 12px;
  align-items: stretch;
  max-width: 100%;
}

.search-input-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 4px 4px 4px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-input-wrap:focus-within {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md), 0 0 0 3px var(--focus-ring);
}

.search-input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  padding: 10px 8px 10px 0;
  font-size: 1rem;
  color: var(--text);
  outline: none;
}

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

.search-btn {
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius-input);
  padding: 0 22px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-btn:hover:not(:disabled) {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.search-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.search-btn:active:not(:disabled) {
  transform: scale(0.98);
}

.search-btn--primary {
  background: var(--accent-gradient);
  color: #fff;
  border-color: transparent;
  font-weight: 600;
}

.search-btn--primary:hover:not(:disabled) {
  filter: brightness(1.04) saturate(1.03);
  box-shadow: var(--shadow-md);
}

.search-btn--primary:focus-visible {
  box-shadow: 0 0 0 3px var(--focus-ring), var(--shadow-sm);
}

.search-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.search-btn.is-busy {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.search-btn.is-busy::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
}

.search-btn:not(.search-btn--primary).is-busy::after {
  border: 2px solid var(--border);
  border-top-color: var(--accent);
}

.advanced-details {
  margin-top: 20px;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.advanced-details summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 18px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  user-select: none;
  transition: background 0.15s ease;
}

.advanced-details summary::-webkit-details-marker {
  display: none;
}

.advanced-details summary::after {
  content: "";
  float: right;
  width: 0;
  height: 0;
  margin-top: 6px;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--muted);
  transition: transform 0.2s ease;
}

.advanced-details[open] summary::after {
  transform: rotate(180deg);
}

.advanced-details summary:hover {
  background: var(--chip-bg);
}

.advanced-details .advanced-inner {
  padding: 0 18px 18px;
  border-top: 1px solid var(--border);
}

.advanced-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.field-label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  text-align: left;
}

.field-label input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--surface);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field-label input:focus {
  outline: none;
  border-color: var(--border-hover);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.field-label input::placeholder {
  color: var(--muted);
  opacity: 0.85;
}

/* ----- 结果页顶栏 ----- */
.page-header {
  position: static;
  padding: 14px 0 0;
}

.page-header-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  padding: 10px 20px;
}

.page-header-inner {
  display: flex;
  gap: 20px;
  align-items: center;
  padding: 14px 0 12px;
}

.small-logo {
  flex-shrink: 0;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

.small-logo:hover {
  text-decoration: none;
  opacity: 0.85;
}

.page-header .search-form {
  flex: 1;
  min-width: 0;
}

.page-header .search-input-wrap {
  max-width: 720px;
}

.filters-bar {
  padding: 0 0 6px;
}

body.is-search-loading {
  cursor: progress;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px 16px;
}

.filter-row--advanced {
  margin-top: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.filter-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.filter-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.filter-select {
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 8px 12px;
  font-size: 0.875rem;
  color: var(--text);
  background: var(--chip-bg);
  cursor: pointer;
  min-height: 38px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.filter-select:focus {
  outline: none;
  border-color: var(--border-hover);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.filter-input {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 0.875rem;
  color: var(--text);
  background: var(--surface);
  min-width: 140px;
  max-width: 220px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.filter-input:focus {
  outline: none;
  border-color: var(--border-hover);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.filter-input::placeholder {
  color: var(--muted);
  opacity: 0.8;
}

.filter-field--grow {
  flex: 1 1 200px;
  max-width: 320px;
}

.filter-input--wide {
  max-width: none;
  width: 100%;
}

/* ----- 结果列表 ----- */
#results-region:focus {
  outline: none;
}

.results {
  padding: 14px 0 48px;
  max-width: none;
}

.status {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  margin: 0 0 18px;
  font-size: 0.9rem;
  min-height: 1.5em;
  transition: color var(--duration) var(--ease-out);
}

.status::before {
  content: "";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  opacity: 0;
  transform: scale(0.6);
  transition: opacity var(--duration) var(--ease-out), transform var(--duration) var(--ease-out);
}

.status.status--loading::before {
  opacity: 1;
  transform: scale(1);
  animation: spin 0.7s linear infinite;
}

.status.error {
  color: var(--danger);
}

.status.error::before {
  display: none;
}

.result-item {
  margin-bottom: 16px;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  transition:
    border-color var(--duration) var(--ease-out),
    transform var(--duration) var(--ease-out);
}

.result-item:hover {
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.result-item:active {
  transform: translateY(0);
}

.result-url {
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 2px;
  word-break: break-all;
  line-height: 1.35;
}

.result-title {
  font-size: 1.15rem;
  font-weight: 400;
  line-height: 1.35;
  margin-bottom: 4px;
}

.result-title a {
  color: var(--link);
}

.result-title a:visited {
  color: var(--link-visited);
}

.result-meta {
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--muted);
}

.result-snippet {
  color: color-mix(in srgb, var(--text) 68%, var(--muted) 32%);
  font-size: 0.9rem;
  line-height: 1.58;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.skeleton-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.skeleton-card {
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  overflow: hidden;
}

.skeleton-line {
  position: relative;
  height: 12px;
  border-radius: 6px;
  background: var(--chip-bg);
  overflow: hidden;
}

.skeleton-line::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  animation: shimmer-slide 1.15s ease-in-out infinite;
}

@media (prefers-color-scheme: dark) {
  .skeleton-line::after {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.12), transparent);
  }
}

.skeleton-line + .skeleton-line {
  margin-top: 10px;
}

.skeleton-line--short {
  width: 55%;
}

.skeleton-line--medium {
  width: 78%;
}

.skeleton-line--title {
  height: 18px;
  width: 70%;
  margin-bottom: 4px;
}

.empty-state {
  text-align: center;
  padding: 36px 20px;
  border: 1px dashed var(--border);
  border-radius: 16px;
  background: var(--surface);
  color: var(--muted);
}

.empty-state-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  border-radius: 14px;
  background: var(--chip-bg);
  position: relative;
}

.empty-state-icon::before,
.empty-state-icon::after {
  content: "";
  position: absolute;
  background: var(--muted);
  opacity: 0.35;
  border-radius: 2px;
}

.empty-state-icon::before {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  top: 10px;
  left: 13px;
}

.empty-state-icon::after {
  width: 28px;
  height: 10px;
  bottom: 10px;
  left: 10px;
  border-radius: 4px;
}

.empty-state-title {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

.empty-state-hint {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.55;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.pagination button {
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 8px 18px;
  font-size: 0.875rem;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}

.pagination button:hover:not(:disabled) {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
}

.pagination button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.pagination button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

#page-indicator {
  font-size: 0.875rem;
  color: var(--muted);
}

/* ----- Modern Refresh ----- */
body.page-search {
  background:
    radial-gradient(1200px 460px at 50% -120px, var(--accent-soft), transparent 68%),
    radial-gradient(900px 420px at 82% -160px, rgba(161, 196, 253, 0.18), transparent 70%),
    var(--bg);
}

.page-header {
  padding-top: 18px;
}

.page-header-card {
  border: 1px solid color-mix(in srgb, var(--border) 65%, transparent);
  border-radius: 22px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 12px 22px;
}

.small-logo {
  font-size: 1.32rem;
  font-weight: 700;
}

.page-header .search-input-wrap {
  max-width: 760px;
  border-color: color-mix(in srgb, var(--border) 72%, transparent);
}

.search-input-wrap {
  border-radius: 999px;
}

.search-btn {
  border-radius: 999px;
  min-height: 46px;
}

.search-btn--primary {
  background: var(--accent-gradient);
  border: none;
  box-shadow: 0 8px 20px rgba(94, 147, 240, 0.32);
}

.search-btn--primary:hover:not(:disabled) {
  filter: brightness(1.04);
  box-shadow: 0 12px 26px rgba(126, 182, 255, 0.38);
}

.filters-bar {
  padding-bottom: 12px;
}

.filter-label {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

.filter-select,
.filter-input {
  min-height: 40px;
  border-color: color-mix(in srgb, var(--border) 72%, transparent);
  background: color-mix(in srgb, var(--surface) 90%, var(--chip-bg) 10%);
}

.results {
  padding-top: 18px;
}

.status {
  font-size: 0.95rem;
  margin-bottom: 14px;
}

.result-item {
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  border-radius: 18px;
  padding: 18px 20px;
}

.result-item:hover {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border) 60%);
  transform: translateY(-2px);
}

.result-title {
  font-size: 1.23rem;
  font-weight: 500;
}

.result-snippet {
  font-size: 0.93rem;
}

.pagination {
  margin-top: 24px;
}

/* ----- Doc Page ----- */
.page-doc .page-header {
  padding-top: 18px;
}

.doc-back {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.92rem;
}

.doc-main {
  padding: 18px 0 42px;
}

.doc-title {
  margin: 0 0 10px;
  font-size: 1.8rem;
  line-height: 1.3;
}

.doc-meta {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 0.9rem;
  word-break: break-all;
}

.doc-content {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
  padding: 22px 24px;
  font-size: 1rem;
  line-height: 1.78;
  word-wrap: break-word;
}

.doc-content h1,
.doc-content h2,
.doc-content h3 {
  margin-top: 1.2em;
  margin-bottom: 0.5em;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.doc-content h1 {
  font-size: 1.6rem;
}

.doc-content h2 {
  font-size: 1.35rem;
}

.doc-content h3 {
  font-size: 1.15rem;
}

.doc-content p {
  margin: 0.7em 0;
  line-height: 1.72;
}

.doc-content ul {
  margin: 0.6em 0;
  padding-left: 1.4em;
}

.doc-content li {
  margin: 0.35em 0;
}

.doc-content ol {
  margin: 0.6em 0;
  padding-left: 1.5em;
}

.doc-content a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.doc-content a:hover {
  color: var(--accent-hover);
}

.doc-content hr {
  margin: 1.2em 0;
  border: 0;
  border-top: 1px solid var(--border);
}

.doc-content blockquote {
  margin: 1em 0;
  padding: 0.7em 1em;
  border-left: 4px solid var(--accent);
  background: color-mix(in srgb, var(--chip-bg) 72%, transparent);
  color: var(--muted);
  border-radius: 8px;
}

.doc-content blockquote p {
  margin: 0.3em 0;
}

.doc-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  display: block;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.doc-content thead {
  background: color-mix(in srgb, var(--chip-bg) 72%, transparent);
}

.doc-content th,
.doc-content td {
  border-bottom: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  white-space: nowrap;
}

.doc-content tr:last-child td {
  border-bottom: 0;
}

.doc-content pre {
  overflow: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--chip-bg) 82%, transparent);
  padding: 14px 16px;
  line-height: 1.6;
}

.doc-content code {
  display: inline-block;
  padding: 0.1em 0.35em;
  margin: 0 0.1em;
  border-radius: 6px;
  background: color-mix(in srgb, var(--chip-bg) 78%, transparent);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.92em;
}

.doc-content pre code {
  display: block;
  border: 0;
  background: transparent;
  margin: 0;
  padding: 0;
  font-size: 0.9em;
}

.doc-content img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  margin: 0.8em 0;
  border: 1px solid var(--border);
}

.doc-empty {
  color: var(--muted);
  text-align: center;
  margin: 1.2em 0;
}

@media (max-width: 760px) {
  .page-header-card {
    border-radius: 18px;
    padding: 10px 14px;
  }

  .small-logo {
    font-size: 1.2rem;
  }

  .result-item {
    border-radius: 14px;
    padding: 14px;
  }

  .doc-content {
    border-radius: 14px;
    padding: 14px;
  }
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes shimmer-slide {
  100% {
    transform: translateX(100%);
  }
}

@keyframes bg-float-a {
  0% {
    transform: translate3d(-1.5%, -1%, 0) scale(1);
    opacity: 0.85;
  }
  50% {
    transform: translate3d(1.2%, 1.4%, 0) scale(1.04);
    opacity: 1;
  }
  100% {
    transform: translate3d(0.8%, -1.2%, 0) scale(1.02);
    opacity: 0.9;
  }
}

@keyframes bg-float-b {
  0% {
    transform: translate3d(1.2%, 0.8%, 0) scale(1.01);
    opacity: 0.75;
  }
  50% {
    transform: translate3d(-1.4%, -1%, 0) scale(1.05);
    opacity: 0.92;
  }
  100% {
    transform: translate3d(0.6%, 1.1%, 0) scale(1.02);
    opacity: 0.8;
  }
}

@media (prefers-reduced-motion: reduce) {
  .home-card {
    animation: none;
  }

  .result-item,
  .search-input-wrap,
  .search-btn,
  .pagination button,
  .filter-select,
  .filter-input {
    transition: none !important;
  }

  .result-item:hover {
    transform: none;
  }

  .search-btn:active:not(:disabled) {
    transform: none;
  }

  .status.status--loading::before,
  .skeleton-line::after,
  .search-btn.is-busy::after,
  body.page-home::before,
  body.page-home::after,
  body.page-search::before,
  body.page-search::after,
  .wave-layer,
  .ambient-corona,
  .ambient-orb,
  .ambient-spark {
    animation: none !important;
  }

  .wave-layer {
    transform: translateX(0);
  }

  .ambient-corona {
    opacity: 0.8;
    transform: translateX(-50%) scale(1);
  }

  .ambient-orb {
    transform: none;
  }

  .ambient-spark {
    opacity: 0.35;
    transform: scale(1);
  }

  .skeleton-line::after {
    opacity: 0;
  }
}

@media (max-width: 760px) {
  body.page-home .home {
    padding-top: max(20px, env(safe-area-inset-top, 0px));
    padding-right: max(16px, env(safe-area-inset-right, 0px));
    padding-bottom: max(32px, env(safe-area-inset-bottom, 0px));
    padding-left: max(16px, env(safe-area-inset-left, 0px));
    place-items: center stretch;
    align-content: center;
  }

  body.page-home .home-card {
    width: 100%;
    max-width: 100%;
    padding: 20px 16px;
    border-radius: 20px;
  }

  body.page-home .home-card::after {
    border-radius: 22px;
  }

  body.page-home .logo {
    margin-bottom: 22px;
    font-size: clamp(1.75rem, 8vw, 2.5rem);
  }

  body.page-home .search-form {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  body.page-home .search-input-wrap {
    width: 100%;
    padding: 4px 4px 4px 14px;
  }

  body.page-home .search-input {
    font-size: 16px;
  }

  body.page-home .advanced-details summary {
    padding: 12px 14px;
    font-size: 0.9rem;
  }

  body.page-home .advanced-details .advanced-inner {
    padding: 0 14px 14px;
  }

  body.page-home .field-label input {
    font-size: 16px;
  }

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

  .page-header-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .page-header .search-form {
    flex-direction: column;
  }

  .search-btn {
    width: 100%;
    padding: 12px;
  }

  .filter-input {
    max-width: none;
    width: 100%;
  }

  .filter-field {
    flex: 1 1 calc(50% - 8px);
  }
}