:root {
  --bg: #0b1020;
  --bg-elev: #0f1530;
  --text: #e8ecf8;
  --muted: #a7b0c4;
  --border: #26304a;
  --primary: #6d5efc;
  --primary-600: #5b4ef1;
  --primary-700: #4f46e5;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #ef4444;
  --code-bg: #10172a;
  --card-bg: #0c1328;
  --shadow: 0 10px 30px rgba(0,0,0,0.35), inset 0 0 0 1px rgba(255,255,255,0.03);
  --radius: 14px;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f8fafc;
    --bg-elev: #ffffff;
    --text: #0b1020;
    --muted: #475569;
    --border: #e2e8f0;
    --primary: #4f46e5;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --code-bg: #0b1020;
    --card-bg: #ffffff;
    --shadow: 0 10px 30px rgba(2,6,23,0.08), inset 0 0 0 1px rgba(2,6,23,0.05);
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: radial-gradient(1200px 800px at 80% -10%, rgba(109,94,252,0.18), transparent 60%), radial-gradient(1200px 800px at -10% 20%, rgba(45,212,191,0.10), transparent 60%), var(--bg); color: var(--text); font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji"; line-height: 1.55; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { width: min(1100px, 92vw); margin: 0 auto; }
header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(180%) blur(10px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: 0.2px; }
.logo {
  width: 28px; height: 28px; border-radius: 8px;
  background: conic-gradient(from 210deg, #6d5efc, #4ade80, #22d3ee, #6d5efc);
  box-shadow: inset 0 0 20px rgba(255,255,255,0.45), 0 6px 18px rgba(109,94,252,0.45);
}
nav ul { list-style: none; padding: 0; margin: 0; display: flex; gap: 18px; }
nav a { color: var(--text); opacity: 0.85; font-weight: 600; padding: 8px 10px; border-radius: 8px; }
nav a:hover { background: color-mix(in srgb, var(--bg-elev) 92%, transparent); opacity: 1; text-decoration: none; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(180deg, var(--primary), var(--primary-700));
  color: white; border: none; border-radius: 10px; padding: 10px 14px; cursor: pointer; font-weight: 700;
  box-shadow: 0 10px 20px rgba(93, 80, 255, 0.4), inset 0 0 0 1px rgba(255,255,255,0.08);
  transition: transform 0.06s ease, box-shadow 0.2s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 14px 22px rgba(93, 80, 255, 0.5), inset 0 0 0 1px rgba(255,255,255,0.12); }
.btn.secondary { background: none; color: var(--text); border: 1px solid var(--border); box-shadow: var(--shadow); }
.btn.ghost { background: none; color: var(--text); border: 1px dashed var(--border); }
.hero {
  padding: 64px 0 36px;
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 36px; align-items: center;
}
.badge { display: inline-flex; gap: 8px; align-items: center; font-size: 12px; border: 1px solid var(--border); padding: 6px 10px; border-radius: 999px; color: var(--muted); background: color-mix(in srgb, var(--bg-elev) 94%, transparent); }
.title { font-size: clamp(28px, 5vw, 48px); line-height: 1.05; letter-spacing: -0.02em; margin: 10px 0 12px; }
.subtitle { color: var(--muted); font-size: 16px; }
.card {
  background: linear-gradient(180deg, color-mix(in srgb, var(--card-bg) 94%, transparent), color-mix(in srgb, var(--card-bg) 96%, transparent));
  border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
}
.hero .preview {
  padding: 18px; display: grid; gap: 12px; align-items: center; justify-items: center;
}
.preview-inner {
  width: 100%; aspect-ratio: 1 / 1; border-radius: 12px; background:
    radial-gradient(120px 120px at 80% 20%, rgba(109,94,252,0.35), transparent),
    radial-gradient(160px 120px at 20% 80%, rgba(56,189,248,0.25), transparent),
    linear-gradient(135deg, #0c1328, #0b1022);
  display: grid; place-items: center; border: 1px solid var(--border);
}
.preview-inner svg, .preview-inner img { max-width: 74%; height: auto; filter: drop-shadow(0 10px 18px rgba(0,0,0,0.5)); }
.grid { display: grid; gap: 18px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 920px) {
  .hero { grid-template-columns: 1fr; }
  .grid.cols-3 { grid-template-columns: 1fr; }
  .grid.cols-2 { grid-template-columns: 1fr; }
}
section { padding: 34px 0; }
h2 { font-size: 22px; margin: 0 0 14px; }
p { margin: 0 0 10px; }
ul { margin: 0 0 10px 18px; }
.callout {
  padding: 12px 14px; border-radius: 12px;
  background: color-mix(in srgb, var(--bg-elev) 92%, transparent);
  border: 1px solid var(--border); color: var(--muted);
}
.code {
  position: relative;
  margin-bottom: 12px;
  background: var(--code-bg);
  color: #e5e7eb;
  border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
  overflow: hidden;
}
.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: rgba(255,255,255,0.05);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
}
.code-content {
  position: relative;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 14px;
  max-width: 100%;
}
.code::-webkit-scrollbar,
.code-content::-webkit-scrollbar {
  height: 8px;
}
.code::-webkit-scrollbar-track,
.code-content::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.05);
  border-radius: 4px;
}
.code::-webkit-scrollbar-thumb,
.code-content::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.2);
  border-radius: 4px;
}
.code .copy {
  background: rgba(255,255,255,0.06);
  color: #e5e7eb;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.code .copy:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
}
.code pre {
  margin: 0;
  white-space: pre;
  min-width: min-content;
  max-width: 100%;
}
.api-table { width: 100%; border-collapse: collapse; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.api-table th, .api-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); }
.api-table th { text-align: left; font-weight: 700; background: color-mix(in srgb, var(--bg-elev) 94%, transparent); }
.flex { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.kpi { display: grid; gap: 4px; padding: 12px; border: 1px dashed var(--border); border-radius: 12px; min-width: 160px; }
.muted { color: var(--muted); }
.form { display: grid; gap: 14px; }
.field { display: grid; gap: 8px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 700px) { .row { grid-template-columns: 1fr; } }
label { font-weight: 700; font-size: 13px; color: var(--muted); }
input[type="text"], input[type="number"], textarea, select {
  background: color-mix(in srgb, var(--bg-elev) 94%, transparent);
  color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 12px;
  outline: none; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.02);
}
input[type="color"] { width: 100%; height: 40px; padding: 4px; border-radius: 10px; background: transparent; border: 1px solid var(--border); }
textarea { min-height: 80px; resize: vertical; }
.result { padding: 14px; border: 1px solid var(--border); border-radius: 12px; background: color-mix(in srgb, var(--bg-elev) 92%, transparent); display: grid; gap: 10px; }
.result .thumb { display: grid; place-items: center; padding: 10px; background: var(--bg); border: 1px solid var(--border); border-radius: 12px; min-height: 220px; overflow: auto; }
.note { font-size: 12px; color: var(--muted); }
footer { padding: 36px 0 60px; color: var(--muted); }
.pill { padding: 2px 8px; font-size: 12px; border: 1px solid var(--border); border-radius: 999px; }
.filename {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}
.code .copy.success {
  color: #3fb950;
  border-color: #3fb950;
}
/* API section code examples responsiveness */
#api .code-content code {
  word-break: break-word;
  display: block;
}
#api .code pre {
  font-size: 12px;
}
@media (max-width: 700px) {
  .code-content pre {
    font-size: 11px;
  }
  #api .code pre {
    font-size: 11px;
  }
}
.hidden { display: none !important; }