/* On-brand with sahilmenon.com: dark theme, amber accent, Space Grotesk / Inter / Space Mono. */
:root {
  --bg: #13151a;
  --bg2: #1a1d24;
  --text: #e8eaf0;
  --dim: #9ba3b8;
  --accent: #f59e0b;
  --accent2: #f97316;
  --card: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.09);
  --good: #34d399;
  --bad: #f87171;
  --grad: linear-gradient(90deg, #f59e0b, #f97316);
  --mono: "Space Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --head: "Space Grotesk", system-ui, sans-serif;
  --body: "Inter", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--head); font-weight: 600; line-height: 1.2; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }
.mono { font-family: var(--mono); }

/* header */
header { padding: 64px 0 28px; border-bottom: 1px solid var(--border); }
.eyebrow { color: var(--accent); font-family: var(--mono); font-size: 13px; letter-spacing: 2px; text-transform: uppercase; }
h1 { font-size: clamp(30px, 5vw, 46px); margin: 8px 0 10px; }
h1 .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.lede { color: var(--dim); font-size: 18px; max-width: 640px; }
.links { margin-top: 16px; display: flex; gap: 14px; flex-wrap: wrap; font-size: 14px; }
.links a { border: 1px solid var(--border); padding: 6px 12px; border-radius: 8px; color: var(--text); }
.links a:hover { border-color: var(--accent); text-decoration: none; }

/* validation badges */
.badges { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 28px 0; }
.badge { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; }
.badge .k { color: var(--dim); font-size: 12px; text-transform: uppercase; letter-spacing: 1px; }
.badge .v { font-family: var(--mono); font-size: 22px; margin-top: 4px; }
.badge .v.ok::after { content: " ✓"; color: var(--good); }

section { padding: 40px 0; border-bottom: 1px solid var(--border); }
section h2 { font-size: 26px; margin: 0 0 6px; }
section .sub { color: var(--dim); margin: 0 0 22px; }

/* figures */
.figs { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.figs figure { margin: 0; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 12px; }
.figs img { width: 100%; border-radius: 6px; display: block; }
.figs figcaption { color: var(--dim); font-size: 13px; margin-top: 8px; }
@media (max-width: 700px) { .figs { grid-template-columns: 1fr; } }

/* play area */
.tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.tab { background: var(--card); border: 1px solid var(--border); color: var(--dim); padding: 8px 18px; border-radius: 10px; cursor: pointer; font-family: var(--head); font-size: 15px; }
.tab.active { color: var(--bg); background: var(--accent); border-color: var(--accent); font-weight: 600; }

.table { background: radial-gradient(120% 120% at 50% 0%, #1f2530 0%, #14171d 70%); border: 1px solid var(--border); border-radius: 16px; padding: 22px; }
.seatrow { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.seat { text-align: center; flex: 1; }
.seat .who { color: var(--dim); font-size: 12px; text-transform: uppercase; letter-spacing: 1px; }
.seat.turn .who { color: var(--accent); }
.cards { display: flex; gap: 8px; justify-content: center; margin-top: 8px; min-height: 74px; }
.pcard { width: 50px; height: 70px; border-radius: 8px; background: #f4f4f5; color: #18181b; display: flex; align-items: center; justify-content: center; font-family: var(--head); font-weight: 700; font-size: 26px; box-shadow: 0 3px 10px rgba(0,0,0,.4); }
.pcard.back { background: repeating-linear-gradient(45deg, #2b3240, #2b3240 6px, #232a36 6px, #232a36 12px); color: transparent; }
.pcard.board { border: 2px solid var(--accent); }

.potbar { text-align: center; margin: 16px 0; }
.potbar .pot { font-family: var(--mono); font-size: 15px; color: var(--dim); }
.potbar .pot b { color: var(--text); }

.actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 18px; min-height: 46px; }
.btn { font-family: var(--head); font-size: 15px; padding: 10px 22px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg2); color: var(--text); cursor: pointer; transition: transform .05s, border-color .15s; }
.btn:hover:not(:disabled) { border-color: var(--accent); transform: translateY(-1px); }
.btn.primary { background: var(--accent); color: #17181c; border-color: var(--accent); font-weight: 600; }
.btn:disabled { opacity: .4; cursor: default; }

.hint { text-align: center; color: var(--dim); font-size: 13px; font-family: var(--mono); margin-top: 10px; min-height: 18px; }
.hint b { color: var(--accent); }

.panel { display: grid; grid-template-columns: 1fr 260px; gap: 18px; margin-top: 20px; align-items: start; }
@media (max-width: 700px) { .panel { grid-template-columns: 1fr; } }
.log { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; height: 200px; overflow-y: auto; font-family: var(--mono); font-size: 13px; }
.log .l { padding: 2px 0; color: var(--dim); }
.log .l.you { color: var(--text); }
.log .l.win { color: var(--good); }
.log .l.lose { color: var(--bad); }
.log .l.deal { color: var(--accent); }

.score { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.score h3 { margin: 0 0 12px; font-size: 15px; }
.score .row { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 14px; padding: 5px 0; }
.score .row .val { color: var(--text); }
.score .row .val.pos { color: var(--good); }
.score .row .val.neg { color: var(--bad); }
.score .note { color: var(--dim); font-size: 12px; margin-top: 12px; line-height: 1.5; }
.score .controls { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }

.toggle { display: flex; align-items: center; gap: 8px; color: var(--dim); font-size: 13px; margin-top: 10px; cursor: pointer; }
.toggle input { accent-color: var(--accent); }

footer { padding: 34px 0 60px; color: var(--dim); font-size: 13px; }
.explainer { color: var(--dim); font-size: 15px; max-width: 720px; }
.explainer code { font-family: var(--mono); background: var(--card); padding: 1px 6px; border-radius: 5px; color: var(--text); }