/* SVG-002 SVG 动画组件 — 作品样式 */
:root {
  --bg: #07090d;
  --bg-rgb: 7, 9, 13;
  --bg-soft: #0a0f14;
  --bg-card: #0d141b;
  --ink: #e6f1ee;
  --ink-soft: #98a8a4;
  --ink-muted: #6b7a76;
  --line: rgba(94, 234, 212, 0.12);
  --line-strong: rgba(94, 234, 212, 0.28);
  --teal: #5eead4;
  --on-teal: #06121a;
  --violet: #a78bfa;
  --blue: #60a5fa;
  --pink: #f0abfc;
  --amber: #fde68a;
  --grad-brand: linear-gradient(135deg, #5eead4 0%, #60a5fa 50%, #a78bfa 100%);
  --font-display: "Fraunces", "Noto Serif SC", serif;
  --font-body: "Inter", "Noto Sans SC", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --radius: 14px;
  --pad-x: clamp(20px, 5vw, 80px);
}
:root[data-theme="light"] {
  --bg: #f6f7f9;
  --bg-rgb: 246, 247, 249;
  --bg-soft: #ffffff;
  --bg-card: #ffffff;
  --ink: #0e1117;
  --ink-soft: #4a5563;
  --ink-muted: #8895a3;
  --line: rgba(13, 148, 136, 0.16);
  --line-strong: rgba(13, 148, 136, 0.36);
  --teal: #0d9488;
  --on-teal: #ffffff;
  --violet: #7c3aed;
  --blue: #2563eb;
  --grad-brand: linear-gradient(135deg, #0d9488 0%, #2563eb 50%, #7c3aed 100%);
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
a {
  color: inherit;
  text-decoration: none;
}
em {
  font-style: italic;
  font-family: var(--font-display);
  font-weight: 500;
}

/* 背景 */
.bg-stage {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.aurora {
  position: absolute;
  width: 70vw;
  height: 70vw;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.28;
  mix-blend-mode: screen;
  animation: drift 30s ease-in-out infinite alternate;
}
.aurora-1 {
  background: radial-gradient(circle, #a78bfa, transparent 60%);
  top: -25vw;
  left: -15vw;
}
.aurora-2 {
  background: radial-gradient(circle, #5eead4, transparent 60%);
  bottom: -25vw;
  right: -15vw;
  animation-delay: -8s;
}
@keyframes drift {
  0% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(6vw, -4vw) scale(1.08);
  }
  100% {
    transform: translate(-6vw, 5vw) scale(0.96);
  }
}
.grid-floor {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(94, 234, 212, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94, 234, 212, 0.045) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(
    ellipse at center,
    rgba(0, 0, 0, 0.7) 0%,
    transparent 75%
  );
}
.noise {
  position: absolute;
  inset: 0;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.7'/></svg>");
}

/* 顶部导航 */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px var(--pad-x);
  gap: 24px;
  backdrop-filter: blur(14px) saturate(160%);
  background: linear-gradient(
    180deg,
    rgba(var(--bg-rgb), 0.7),
    rgba(var(--bg-rgb), 0.3)
  );
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
}
.brand-text em {
  font-family: var(--font-display);
  color: var(--teal);
  margin-left: 2px;
}
.nav-links {
  display: flex;
  gap: 22px;
  font-size: 13px;
}
.nav-links a {
  color: var(--ink-soft);
  transition: color 0.25s;
}
.nav-links a:hover {
  color: var(--teal);
}
.nav-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-muted);
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 12px var(--violet);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.4);
    opacity: 0.6;
  }
}
@media (max-width: 760px) {
  .nav-links a:not(:first-child) {
    display: none;
  }
  .nav-meta {
    display: none;
  }
}

/* 标题区 */
.work-hero {
  padding: clamp(60px, 10vh, 120px) var(--pad-x) 50px;
  max-width: 1100px;
}
.work-hero-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--teal);
  letter-spacing: 0.16em;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 8px 0;
  margin-bottom: 28px;
  display: inline-block;
}
.work-hero-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(36px, 6vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}
.work-hero-title .grad {
  display: block;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-style: italic;
  font-weight: 500;
  margin-top: 4px;
  font-size: 0.72em;
}
.work-hero-lead {
  color: var(--ink-soft);
  max-width: 620px;
  font-size: 15px;
  margin-bottom: 36px;
}
.work-hero-lead b {
  color: var(--teal);
  font-weight: 600;
}
.work-hero-stats {
  display: inline-flex;
  gap: 36px;
  padding: 18px 28px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
  flex-wrap: wrap;
}
.work-hero-stats > div {
  display: grid;
  align-items: baseline;
  gap: 2px;
}
.work-hero-stats b {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 26px;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.work-hero-stats small {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-muted);
  letter-spacing: 0.1em;
}

/* 工具栏 */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px var(--pad-x);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(94, 234, 212, 0.02);
  position: sticky;
  top: 56px;
  z-index: 30;
  backdrop-filter: blur(10px);
  flex-wrap: wrap;
}
.filter-tabs {
  display: inline-flex;
  gap: 6px;
  flex-wrap: wrap;
}
.tab {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.25s ease;
}
.tab:hover {
  color: var(--ink);
  border-color: var(--line-strong);
}
.tab.is-active {
  background: var(--teal);
  color: var(--on-teal);
  border-color: var(--teal);
  font-weight: 600;
}
.toolbar-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
}

/* 画廊 */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  padding: 30px var(--pad-x) 80px;
}
.svg-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition:
    transform 0.4s cubic-bezier(0.2, 0.7, 0.2, 1),
    border-color 0.3s ease,
    box-shadow 0.4s ease;
  display: grid;
  grid-template-rows: 1fr auto;
}
.svg-card:hover {
  transform: translateY(-4px);
  border-color: var(--teal);
  box-shadow:
    0 20px 50px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(94, 234, 212, 0.15);
}
.svg-card.is-hidden {
  display: none;
}
.svg-card-preview {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 5 / 3.4;
  background:
    radial-gradient(
      circle at 50% 50%,
      rgba(94, 234, 212, 0.05),
      transparent 70%
    ),
    var(--bg-soft);
  overflow: hidden;
}
.svg-card-preview > svg {
  width: 70%;
  height: 70%;
  max-width: 240px;
  max-height: 200px;
  position: relative;
  z-index: 1;
}
.svg-card-preview::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(94, 234, 212, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94, 234, 212, 0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(
    circle at center,
    rgba(0, 0, 0, 0.5),
    transparent 75%
  );
  pointer-events: none;
}
.svg-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-top: 1px solid var(--line);
  gap: 12px;
}

/* SVG 源码折叠区 */
.svg-card-code {
  border-top: 1px solid var(--line);
  background: #07090d;
  color: #e6f1ee;
  font-family: var(
    --font-mono,
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Consolas,
    monospace
  );
  font-size: 11px;
}
.svg-card-code > summary {
  cursor: pointer;
  list-style: none;
  padding: 10px 18px;
  color: var(--ink-muted);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  user-select: none;
  transition:
    color 0.2s ease,
    background 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}
.svg-card-code > summary::-webkit-details-marker {
  display: none;
}
.svg-card-code > summary::before {
  content: "▸";
  display: inline-block;
  transition: transform 0.2s ease;
  color: var(--teal);
}
.svg-card-code[open] > summary::before {
  transform: rotate(90deg);
}
.svg-card-code > summary:hover {
  color: var(--ink);
  background: rgba(94, 234, 212, 0.04);
}
.svg-card-code pre {
  margin: 0;
  padding: 14px 18px 18px;
  max-height: 240px;
  overflow: auto;
  white-space: pre;
  line-height: 1.55;
  background: transparent;
  border-top: 1px dashed var(--line);
}
.svg-card-code code {
  color: inherit;
  font: inherit;
}
.svg-card-info {
  min-width: 0;
}
.svg-card-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 17px;
  margin-bottom: 2px;
  letter-spacing: -0.01em;
}
.svg-card-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.copy-btn {
  background: rgba(94, 234, 212, 0.08);
  border: 1px solid var(--line);
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.25s ease;
  flex-shrink: 0;
}
.copy-btn:hover {
  background: var(--teal);
  color: var(--on-teal);
  border-color: var(--teal);
}
.copy-btn.copied {
  background: var(--teal);
  color: var(--on-teal);
  border-color: var(--teal);
}

/* 浮动提示 */
.copied-toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  transform: translate(-50%, 20px);
  background: var(--teal);
  color: var(--on-teal);
  padding: 12px 22px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  box-shadow: 0 14px 40px rgba(94, 234, 212, 0.35);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.3s ease,
    transform 0.3s cubic-bezier(0.2, 0.7, 0.2, 1);
  z-index: 100;
}
.copied-toast.is-show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* Footer */
.footer {
  padding: 40px var(--pad-x);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, transparent, rgba(94, 234, 212, 0.03));
}
.footer-mini {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-mini em {
  color: var(--teal);
  font-style: italic;
}

/* ============================================================
   主题切换按钮 + 亮色专属调整
   ============================================================ */
.theme-btn {
  position: relative;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition:
    border-color 0.25s ease,
    transform 0.25s ease,
    background 0.25s ease;
  flex-shrink: 0;
}
.theme-btn:hover {
  border-color: var(--teal);
  background: rgba(94, 234, 212, 0.06);
  transform: rotate(20deg);
}
.theme-btn:active {
  transform: scale(0.94);
}
.theme-btn svg {
  position: absolute;
  transition:
    opacity 0.35s ease,
    transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1);
}
[data-theme="dark"] .theme-btn .icon-sun {
  opacity: 1;
  transform: rotate(0) scale(1);
}
[data-theme="dark"] .theme-btn .icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}
[data-theme="light"] .theme-btn .icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}
[data-theme="light"] .theme-btn .icon-moon {
  opacity: 1;
  transform: rotate(0) scale(1);
}
[data-theme="light"] .theme-btn:hover {
  background: rgba(13, 148, 136, 0.08);
}

/* —— 亮色：背景层 —— */
[data-theme="light"] body {
  background:
    radial-gradient(
      1200px 600px at 100% -10%,
      rgba(124, 58, 237, 0.1),
      transparent 60%
    ),
    radial-gradient(
      1000px 700px at -10% 110%,
      rgba(13, 148, 136, 0.12),
      transparent 60%
    ),
    var(--bg);
}
[data-theme="light"] .grid-bg {
  background-image:
    linear-gradient(rgba(13, 148, 136, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 148, 136, 0.08) 1px, transparent 1px);
}
[data-theme="light"] .noise {
  opacity: 0.04;
  mix-blend-mode: multiply;
}

/* —— 亮色：导航 —— */
[data-theme="light"] .nav {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.88),
    rgba(255, 255, 255, 0.65)
  );
  border-bottom: 1px solid var(--line);
}
[data-theme="light"] .nav-link:hover {
  color: var(--teal);
}

/* —— 亮色：英雄 / 卡片 —— */
[data-theme="light"] .hero {
  border-bottom: 1px solid var(--line);
}
[data-theme="light"] .stat-card,
[data-theme="light"] .svg-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.6) inset,
    0 10px 30px -18px rgba(13, 148, 136, 0.18);
}
[data-theme="light"] .svg-card:hover {
  border-color: var(--line-strong);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.6) inset,
    0 16px 40px -16px rgba(13, 148, 136, 0.28);
}

/* 预览区底色：亮色下使用极浅米/灰，避免 SVG 浅色组件失明 */
/* 预览区在亮色下仍保持深色，以保证 SVG 内嵌浅色可见，并让复制出的源码在任何背景上都能那样显示 */
[data-theme="light"] .svg-card-preview {
  background:
    radial-gradient(
      circle at 50% 50%,
      rgba(94, 234, 212, 0.06),
      transparent 70%
    ),
    linear-gradient(180deg, #0d141b 0%, #07090d 100%);
  border-bottom: 1px solid var(--line);
}
[data-theme="light"] .preview-bg-grid {
  background-image:
    linear-gradient(rgba(94, 234, 212, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94, 234, 212, 0.04) 1px, transparent 1px);
}

/* —— 亮色：分类标签 —— */
[data-theme="light"] .tab {
  background: rgba(13, 148, 136, 0.06);
  border-color: var(--line);
  color: var(--ink-soft);
}
[data-theme="light"] .tab:hover {
  border-color: var(--line-strong);
  color: var(--ink);
}

/* —— 亮色：代码块 —— */
[data-theme="light"] .svg-card-code {
  background: #0e1117;
  color: #e6f1ee;
}
[data-theme="light"] .svg-card-code pre,
[data-theme="light"] .svg-card-code code {
  color: #e6f1ee;
}

/* —— 亮色：复制按钮 —— */
[data-theme="light"] .copy-btn {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.18);
  color: #e6f1ee;
}
[data-theme="light"] .copy-btn:hover,
[data-theme="light"] .copy-btn.copied {
  background: var(--teal);
  color: var(--on-teal);
  border-color: var(--teal);
}

/* —— 亮色：footer —— */
[data-theme="light"] .footer {
  background: linear-gradient(180deg, transparent, rgba(13, 148, 136, 0.04));
}