:root {
  color-scheme: dark;
  --bg: #0f1714;
  --panel: #16211d;
  --line: #26352f;
  --text: #eeeadf;
  --muted: #a49d8a;
  --accent: #f2b84b;
  --accent-soft: #f7dca2;
  --violet: #8b6cff;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: radial-gradient(1200px 600px at 80% -10%, #1f3329 0%, transparent 60%), var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--accent-soft); }

main { max-width: 1100px; margin: 0 auto; padding: 0 16px 48px; }

.top, .bottom { max-width: 1100px; margin: 0 auto; padding: 16px; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.2rem; color: var(--text); text-decoration: none; }
.repo { color: var(--muted); font-size: 0.9rem; }
.bottom { color: var(--muted); font-size: 0.85rem; }

.hero { padding: 40px 0 24px; }
h1 { font-size: clamp(2.2rem, 6vw, 3.6rem); line-height: 1.05; margin: 0 0 16px; letter-spacing: -0.02em; }
h1 span { color: var(--accent); }
.lead { color: var(--muted); max-width: 640px; font-size: 1.1rem; }

.drop {
  display: grid;
  place-items: center;
  gap: 4px;
  margin-top: 24px;
  padding: 40px 16px;
  border: 2px dashed var(--line);
  border-radius: 16px;
  background: var(--panel);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}
.drop:hover, .drop.over { border-color: var(--accent); background: #1b2823; }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop strong { font-size: 1.2rem; }
.drop span, .or, .hint, .note { color: var(--muted); }
.or { margin: 12px 0 0; }

button {
  font: inherit;
  border: 0;
  border-radius: 10px;
  padding: 10px 18px;
  background: var(--accent);
  color: #1d1606;
  font-weight: 700;
  cursor: pointer;
}
button.link { background: none; color: var(--accent-soft); padding: 0; text-decoration: underline; font-weight: 600; }
button:focus-visible, select:focus-visible, .drop:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }

.status { color: var(--muted); }
.error { color: #ff8f8f; background: #2a1520; border-radius: 10px; padding: 12px 14px; }

.how { margin-top: 24px; background: var(--panel); border-radius: 14px; padding: 14px 18px; }
.how summary, .faq summary { cursor: pointer; font-weight: 700; }
.how-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.how h3 { margin-bottom: 4px; }

.toolbar { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; padding: 8px 0 20px; }
.toolbar label { display: flex; gap: 8px; align-items: center; color: var(--muted); }
select { font: inherit; background: var(--panel); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; }

.numbers { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.numbers div { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; display: grid; }
.numbers span { color: var(--muted); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; }
.numbers strong { font-size: clamp(1.3rem, 2.6vw, 1.8rem); font-weight: 800; white-space: nowrap; }
.numbers small { color: var(--muted); }
.numbers small.up { color: #7ee2a8; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 16px 18px; margin-bottom: 16px; min-width: 0; }
.panel h2 { font-size: 1.05rem; margin: 0 0 12px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.grid .panel { margin-bottom: 0; }
.grid + .panel, .grid + .grid { margin-top: 16px; }


.chart { width: 100%; height: auto; }
.chart .bar { fill: var(--accent); }
.chart .axis { fill: var(--muted); font-size: 13px; }
.calendar { width: 100%; height: auto; }
.day.l0 { fill: #1d2a25; }
.day.l1 { fill: #4a3d1f; }
.day.l2 { fill: #876a26; }
.day.l3 { fill: #c99a35; }
.day.l4 { fill: #f7d488; }

table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: right; padding: 6px 4px; border-bottom: 1px solid var(--line); }
th:first-child, td:first-child { text-align: left; }
th { color: var(--muted); font-weight: 600; font-size: 0.85rem; }

.list { list-style: none; margin: 0; padding: 0; }
.list li { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.list li span { color: var(--muted); }
.list li strong { text-align: right; font-variant-numeric: tabular-nums; }

.share canvas { width: min(100%, 420px); height: auto; border-radius: 12px; display: block; margin: 0 auto 14px; }
.actions { display: flex; gap: 12px; justify-content: center; }

.faq { margin-top: 32px; }
.faq details { background: var(--panel); border-radius: 12px; padding: 12px 16px; margin-bottom: 8px; }
.faq p { color: var(--muted); margin-bottom: 0; }
code { background: #0b0c15; padding: 1px 5px; border-radius: 5px; }

.books { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }
.books li { background: #111a17; border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: 8px; padding: 8px 12px; display: grid; }
.books li span { color: var(--muted); font-size: 0.85rem; }
.books li:nth-child(4n+2) { border-left-color: #5fb3a1; }
.books li:nth-child(4n+3) { border-left-color: #e0775a; }
.books li:nth-child(4n) { border-left-color: #8fa6e8; }
kbd { background: #0b100e; border: 1px solid var(--line); border-radius: 4px; padding: 0 4px; font-size: 0.85em; }