:root {
  --bg: #0c1116; --panel: #131a22; --line: #232e3a; --fg: #e6edf3; --muted: #8b97a6;
  --accent: #38bdf8; --accent2: #34d399; --tag: #1e3a4a;
}
* { box-sizing: border-box; }
body { margin: 0; background: radial-gradient(900px 480px at 78% -10%, #14202c 0%, var(--bg) 60%);
  color: var(--fg); font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased; }
.hero { text-align: center; padding: 54px 20px 26px; max-width: 760px; margin: 0 auto; }
.logo { font-size: 38px; }
.hero h1 { font-size: 40px; margin: 6px 0 4px; letter-spacing: -.03em;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.sub { color: var(--fg); font-size: 17px; margin: 0 0 14px; }
.lead { color: var(--muted); font-size: 15.5px; line-height: 1.6; }
.src { display: inline-block; margin-top: 14px; color: var(--accent2); text-decoration: none; font-weight: 600; }
main { max-width: 820px; margin: 0 auto; padding: 0 18px 60px; display: grid; gap: 20px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.card h2 { margin: 0 0 6px; font-size: 20px; }
.muted { color: var(--muted); font-size: 14px; line-height: 1.55; }
.muted code, .features code, .api code, p code { background: rgba(56,189,248,.14); padding: 1px 6px; border-radius: 5px; font-size: .9em; }

.toolbar { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; margin: 14px 0 10px; }
.slider { font-size: 13px; color: var(--muted); display: inline-flex; align-items: center; gap: 8px; }
input[type=range] { accent-color: var(--accent); }
button { font: inherit; cursor: pointer; border: 1px solid var(--line); background: #1a2330; color: var(--fg);
  border-radius: 9px; padding: 8px 14px; }
button:hover { border-color: #33415280; }
textarea { width: 100%; resize: vertical; font: inherit; font-size: 14.5px; line-height: 1.55;
  background: #0c121a; color: var(--fg); border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

.result { display: grid; grid-template-columns: 1fr 120px; gap: 16px; margin-top: 16px; }
@media (max-width: 600px) { .result { grid-template-columns: 1fr; } }
.result__summary h3 { margin: 0 0 8px; font-size: 15px; color: var(--accent); }
.result__summary p { margin: 0; line-height: 1.6; font-size: 15px; }
.tags { margin-top: 12px; display: flex; gap: 6px; flex-wrap: wrap; }
.tag { background: var(--tag); color: #9fe0f7; font-size: 12px; padding: 3px 9px; border-radius: 999px; }
.result__meta { display: flex; flex-direction: column; gap: 10px; }
.stat { background: #0c121a; border: 1px solid var(--line); border-radius: 10px; text-align: center; padding: 12px; }
.stat span { display: block; font-size: 26px; font-weight: 700; color: var(--accent2); font-variant-numeric: tabular-nums; }
.stat label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }

.api { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 13.5px; }
.api td { padding: 7px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.api td:first-child { color: var(--accent2); font-family: ui-monospace, Consolas, monospace; width: 60px; }
.api td:nth-child(2) { color: var(--fg); font-family: ui-monospace, Consolas, monospace; white-space: nowrap; }
.api td:last-child { color: var(--muted); }

.code { margin: 14px 0 0; padding: 14px; background: #0a0f15; border: 1px solid var(--line); border-radius: 10px;
  overflow-x: auto; font-family: ui-monospace, "SF Mono", Consolas, monospace; font-size: 12.5px; line-height: 1.6; color: #c9d6e4; }
.features { color: var(--muted); font-size: 14px; line-height: 1.8; margin: 8px 0 0; padding-left: 18px; }
.features strong { color: var(--fg); }
footer { text-align: center; color: var(--muted); font-size: 13px; padding: 26px; }