/* VIBELADDER — deliberate single-look dark theme */

:root {
  --bg: #0b0e14;
  --bg-raise: #11151f;
  --bg-card: #141927;
  --line: #232b3d;
  --text: #dbe2f0;
  --text-dim: #8b96ad;
  --text-faint: #5a6478;
  --accent: #7cff6b;          /* terminal green — the brand color */
  --accent-dim: rgba(124, 255, 107, 0.12);
  --amber: #ffb454;
  --red: #ff6b7c;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1360px; margin: 0 auto; padding: 0 32px; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- nav ---------- */
nav {
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
  background: rgba(11, 14, 20, 0.92);
  backdrop-filter: blur(8px);
}
nav .wrap {
  display: flex; align-items: center; gap: 28px;
  height: 60px;
}
.logo {
  font-family: var(--mono); font-weight: 700; font-size: 18px;
  color: var(--text); letter-spacing: 0.06em;
}
.logo .tick { color: var(--accent); }
nav .links { display: flex; gap: 22px; margin-left: auto; }
nav .links a { color: var(--text-dim); font-size: 14px; font-weight: 500; }
nav .links a:hover { color: var(--text); text-decoration: none; }
nav .links a.cta {
  color: #0b0e14; background: var(--accent);
  padding: 7px 16px; border-radius: 6px; font-weight: 700;
}
nav .links a.cta:hover { filter: brightness(1.1); }

/* ---------- hero ---------- */
.hero { padding: 96px 0 64px; }
.hero .kicker {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(40px, 6vw, 72px); line-height: 1.05;
  font-weight: 800; letter-spacing: -0.02em; max-width: 900px;
}
.hero h1 .dim { color: var(--text-faint); }
.hero p.sub {
  margin-top: 24px; font-size: 20px; color: var(--text-dim); max-width: 640px;
}
.hero .actions { margin-top: 36px; display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.btn {
  display: inline-block; font-weight: 700; font-size: 16px;
  padding: 13px 26px; border-radius: 8px; border: 1px solid transparent;
}
.btn.primary { background: var(--accent); color: #0b0e14; }
.btn.primary:hover { filter: brightness(1.1); text-decoration: none; }
.btn.ghost { border-color: var(--line); color: var(--text); }
.btn.ghost:hover { border-color: var(--text-faint); text-decoration: none; }

/* countdown */
.countdown {
  margin-top: 48px; display: inline-flex; align-items: baseline; gap: 18px;
  font-family: var(--mono); background: var(--bg-card);
  border: 1px solid var(--line); border-radius: 10px; padding: 18px 24px;
}
.countdown .label { font-size: 13px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.1em; }
.countdown .clock { font-size: 28px; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.countdown .when { font-size: 13px; color: var(--text-faint); }

/* ---------- sections ---------- */
section { padding: 72px 0; border-top: 1px solid var(--line); }
h2 {
  font-family: var(--mono); font-size: 15px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 36px;
}
h2::before { content: "// "; color: var(--text-faint); }

/* how it works */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 12px; padding: 28px;
}
.step .num {
  font-family: var(--mono); font-size: 13px; color: var(--text-faint); margin-bottom: 14px;
}
.step h3 { font-size: 19px; margin-bottom: 10px; }
.step p { font-size: 15px; color: var(--text-dim); }
.step strong { color: var(--text); }

/* schedule */
.schedule { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.round-card {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 12px; padding: 24px; position: relative;
}
.round-card.next { border-color: var(--accent); }
.round-card .rn { font-family: var(--mono); font-size: 13px; color: var(--text-faint); }
.round-card .rd { font-size: 20px; font-weight: 700; margin: 8px 0 4px; }
.round-card .rt { font-size: 14px; color: var(--text-dim); }
.round-card .badge {
  position: absolute; top: 18px; right: 18px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  padding: 3px 9px; border-radius: 20px;
}
.badge.upcoming { background: var(--bg-raise); color: var(--text-dim); border: 1px solid var(--line); }
.badge.next { background: var(--accent-dim); color: var(--accent); border: 1px solid var(--accent); }
.badge.done { background: var(--bg-raise); color: var(--amber); border: 1px solid var(--line); }

/* rules */
.rules { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 48px; max-width: 1100px; }
.rule { display: flex; gap: 16px; align-items: flex-start; }
.rule .mark { font-family: var(--mono); color: var(--accent); font-weight: 700; margin-top: 2px; }
.rule p { font-size: 15px; color: var(--text-dim); }
.rule strong { color: var(--text); }

/* faq */
.faq { max-width: 860px; }
.faq details {
  border: 1px solid var(--line); border-radius: 10px;
  padding: 18px 22px; margin-bottom: 12px; background: var(--bg-card);
}
.faq summary { font-weight: 600; cursor: pointer; font-size: 16px; }
.faq details p { margin-top: 12px; color: var(--text-dim); font-size: 15px; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 40px 0; }
footer .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
footer p { font-size: 13px; color: var(--text-faint); font-family: var(--mono); }

/* ---------- leaderboard page ---------- */
.page-head { padding: 64px 0 40px; }
.page-head h1 { font-size: 40px; font-weight: 800; letter-spacing: -0.02em; }
.page-head p { margin-top: 10px; color: var(--text-dim); font-size: 17px; }

.sample-banner {
  background: rgba(255, 180, 84, 0.08); border: 1px solid rgba(255, 180, 84, 0.35);
  color: var(--amber); border-radius: 10px; padding: 14px 20px;
  font-family: var(--mono); font-size: 14px; margin-bottom: 28px;
}

.board-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; margin-bottom: 64px; }
table.board { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 900px; }
table.board th {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--text-faint); font-weight: 600;
  text-align: left; padding: 14px 18px; background: var(--bg-raise);
  border-bottom: 1px solid var(--line); white-space: nowrap;
}
table.board td {
  padding: 14px 18px; border-bottom: 1px solid var(--line); white-space: nowrap;
}
table.board tr:last-child td { border-bottom: none; }
table.board tr:hover td { background: var(--bg-raise); }
td.rank { font-family: var(--mono); color: var(--text-faint); width: 56px; }
tr.top td.rank { color: var(--accent); font-weight: 700; }
td.handle { font-weight: 600; }
td.rating { font-family: var(--mono); font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
td.rating.unrated { color: var(--text-faint); font-weight: 400; }
td.tool { color: var(--text-dim); }
td.roundcell { font-family: var(--mono); font-size: 13px; }
.chip {
  display: inline-block; padding: 2px 10px; border-radius: 20px; font-size: 12px;
}
.chip.p1 { background: var(--accent-dim); color: var(--accent); }
.chip.pass { background: var(--bg-raise); color: var(--text-dim); border: 1px solid var(--line); }
.chip.fail { background: rgba(255, 107, 124, 0.1); color: var(--red); border: 1px solid rgba(255, 107, 124, 0.3); }
.chip.none { color: var(--text-faint); }

.empty-board {
  padding: 72px 32px; text-align: center; color: var(--text-dim);
}
.empty-board .big { font-size: 20px; font-weight: 600; color: var(--text); margin-bottom: 8px; }

@media (max-width: 980px) {
  .steps, .schedule { grid-template-columns: 1fr 1fr; }
  .rules { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .steps, .schedule { grid-template-columns: 1fr; }
  .wrap { padding: 0 20px; }
  nav .links { gap: 14px; }
  nav .links a:not(.cta) { display: none; }
}