:root { color-scheme: dark light; --bg:#0F1626; --surface:#182238; --text:#F4EFE6; --muted:#B4BBC9; --ember:#F08A4B; --line:#2A3550; }
@media (prefers-color-scheme: light) { :root { --bg:#F7F2E9; --surface:#ECE5D8; --text:#1B2233; --muted:#5A6275; --ember:#B5541C; --line:#DDD4C4; } }
* { box-sizing: border-box; }
body { margin:0; font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans","Noto Sans Devanagari",sans-serif; background:var(--bg); color:var(--text); }
main { max-width:760px; margin:0 auto; padding:28px 20px 64px; }
header.top { display:flex; justify-content:space-between; align-items:center; max-width:760px; margin:0 auto; padding:16px 20px 0; }
header.top a { color:var(--text); text-decoration:none; font-weight:700; }
h1 { font-size:32px; line-height:1.2; margin:16px 0 8px; }
h2 { font-size:22px; margin:36px 0 8px; }
p, li { color:var(--text); }
.lead { color:var(--muted); font-size:18px; }
a { color:var(--ember); }
.timer { background:var(--surface); border-radius:20px; padding:24px; margin:24px 0; text-align:center; }
.timer .phase { color:var(--muted); font-weight:600; }
.timer .clock { font-size:72px; font-weight:700; font-variant-numeric:tabular-nums; letter-spacing:2px; margin:4px 0 12px; }
.presets { display:flex; gap:8px; justify-content:center; flex-wrap:wrap; margin-bottom:16px; }
button { font:inherit; min-height:48px; min-width:48px; padding:10px 18px; border-radius:24px; border:1px solid var(--line); background:transparent; color:var(--text); cursor:pointer; }
button[aria-pressed="true"] { border-color:var(--ember); color:var(--ember); font-weight:700; }
button.primary { background:var(--ember); border-color:var(--ember); color:#0F1626; font-weight:700; padding:12px 32px; }
.cta { display:inline-block; margin:8px 8px 0 0; padding:12px 22px; border-radius:24px; background:var(--ember); color:#0F1626; font-weight:700; text-decoration:none; }
.muted, footer { color:var(--muted); font-size:15px; }
footer { border-top:1px solid var(--line); margin-top:48px; padding-top:16px; }
@media (prefers-reduced-motion: reduce) { * { transition:none !important; animation:none !important; } }