:root {
  --bg: #f4f2ec;
  --surface: #fbfaf6;
  --ink: #1c1b18;
  --ink-2: #55524a;
  --ink-3: #8b877d;
  --line: #e2ded3;
  --line-strong: #cfcabd;
  --live: #d9462a;
  --ok: #2e7a4d;
  --caution-bg: #f8ecd6;
  --caution-ink: #6e4410;
  --caution-line: #ecd3a6;
  --m1: #e0502f;
  --m2: #1c1b18;
  --m3: #e8b53a;
  --m4: #3d6fb4;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161614;
    --surface: #1e1d1b;
    --ink: #ecebe6;
    --ink-2: #b3afa5;
    --ink-3: #7f7c74;
    --line: #2d2c29;
    --line-strong: #3d3b37;
    --live: #f0694a;
    --ok: #62b886;
    --caution-bg: #2f2515;
    --caution-ink: #f0cf97;
    --caution-line: #4a3a1f;
    --m2: #ecebe6;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}
button, input { font: inherit; color: inherit; }
h1, h2, h3, p { margin: 0; }

.page { max-width: 1040px; margin: 0 auto; padding: 0 24px 40px; }

/* Masthead */
.masthead { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 650; font-size: 16px; letter-spacing: -0.01em; }
.mark { width: 18px; height: 18px; }
.m1 { fill: var(--m1); } .m2 { fill: var(--m2); } .m3 { fill: var(--m3); } .m4 { fill: var(--m4); }
.bridge { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--ink-3); }
.bridge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--line-strong); }
.bridge.online { color: var(--ink-2); }
.bridge.online::before { background: var(--ok); }

/* Intro */
.intro { padding: 56px 0 48px; max-width: 620px; }
.intro h1 { font-size: clamp(32px, 5vw, 44px); line-height: 1.08; letter-spacing: -0.025em; font-weight: 650; }
.intro p { margin-top: 16px; color: var(--ink-2); font-size: 17px; line-height: 1.55; }

/* Layout */
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 56px; align-items: start; }

/* Steps */
.steps { border-top: 1px solid var(--line); }
.step { display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 16px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.step-num span {
  display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%;
  border: 1px solid var(--line-strong); color: var(--ink-3); font-size: 13px; font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.step h2 { font-size: 19px; line-height: 1.3; letter-spacing: -0.012em; font-weight: 620; }
.step p { margin-top: 6px; color: var(--ink-2); max-width: 540px; }
.step .row, .step p + .btn { margin-top: 18px; }
.step[data-state="current"] .step-num span { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.step[data-state="done"] .step-num span { border-color: var(--ok); color: var(--ok); font-size: 0; }
.step[data-state="done"] .step-num span::before { content: ""; width: 9px; height: 5px; border: solid currentColor; border-width: 0 0 2px 2px; transform: translateY(-1px) rotate(-45deg); }
.step[data-state="upcoming"] h2 { color: var(--ink-3); }
.step[data-state="upcoming"] p { color: var(--ink-3); }

.account { font-variant-numeric: tabular-nums; }
.account span { color: var(--ink-3); }
.fine { font-size: 13.5px; }

.code {
  margin-top: 14px; display: inline-block; font-family: var(--mono); font-size: clamp(26px, 5vw, 34px);
  font-weight: 500; letter-spacing: 0.08em; padding: 10px 16px; border-radius: 8px;
  background: var(--surface); border: 1px solid var(--line-strong); user-select: all; font-variant-numeric: tabular-nums;
}

.countdown { margin-left: 8px; font-size: 14px; font-weight: 500; color: var(--ink-3); font-variant-numeric: tabular-nums; letter-spacing: 0; }

.caution {
  margin-top: 16px; padding: 14px 16px; max-width: 560px; border-radius: 8px;
  background: var(--caution-bg); color: var(--caution-ink); border: 1px solid var(--caution-line);
  font-size: 14.5px; line-height: 1.5;
}
.caution strong { display: block; font-weight: 650; margin-bottom: 2px; }
#shareCard > p { margin-top: 16px; }

.check { display: flex; gap: 10px; align-items: flex-start; margin-top: 18px; max-width: 540px; font-size: 14.5px; cursor: pointer; }
.check input { margin: 3px 0 0; width: 16px; height: 16px; accent-color: var(--ink); flex: none; }

.preview { position: relative; margin: 20px 0 0; max-width: 560px; aspect-ratio: 16 / 9; border-radius: 8px; overflow: hidden; background: #0d0d0c; border: 1px solid var(--line); }
.preview video { display: block; width: 100%; height: 100%; object-fit: contain; }
.tag {
  position: absolute; left: 10px; top: 10px; padding: 3px 8px; border-radius: 4px;
  background: rgb(20 20 18 / 0.78); color: #ecebe6; font-size: 12px; font-weight: 550;
}
.tag.live { background: var(--live); color: #fff; }

.proof { margin-top: 12px; font-size: 14px; display: flex; gap: 8px; align-items: baseline; }
.proof::before { content: ""; flex: none; width: 7px; height: 7px; border-radius: 50%; background: var(--ink-3); transform: translateY(-1px); }
.proof.checking::before { animation: pulse 1.2s ease-in-out infinite; }
.proof.verified { color: var(--ok); }
.proof.verified::before { background: var(--ok); }
@keyframes pulse { 50% { opacity: 0.25; } }

.message { min-height: 22px; margin-top: 16px; font-size: 14px; color: var(--ink-2); }
.message:empty { margin-top: 0; }

/* Buttons */
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; height: 38px; padding: 0 16px;
  border-radius: 7px; border: 1px solid transparent; font-size: 14px; font-weight: 560; cursor: pointer;
  transition: background-color 0.12s, border-color 0.12s, opacity 0.12s;
}
.btn:focus-visible, .link-btn:focus-visible, .check input:focus-visible { outline: 2px solid var(--m4); outline-offset: 2px; }
.btn:disabled { opacity: 0.38; cursor: not-allowed; }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:not(:disabled):hover { opacity: 0.86; }
.btn-live { background: var(--live); color: #fff; }
.btn-live:not(:disabled):hover { opacity: 0.88; }
.btn-quiet { background: transparent; border-color: var(--line-strong); color: var(--ink); }
.btn-quiet:not(:disabled):hover { background: var(--surface); }
.btn-small { height: 32px; padding: 0 12px; font-size: 13px; }
.link-btn { background: none; border: 0; padding: 0; color: var(--ink); text-decoration: underline; text-underline-offset: 2px; cursor: pointer; }

/* On air */
.onair { position: sticky; top: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 22px; }
.onair-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.onair h2 { font-size: 13px; font-weight: 600; color: var(--ink-3); }
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; color: var(--live); }
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.pending { color: var(--ink-3); }
.host { margin-top: 10px; font-size: 20px; font-weight: 620; letter-spacing: -0.012em; overflow-wrap: anywhere; }
.host.idle { font-size: 16px; font-weight: 500; color: var(--ink-2); letter-spacing: 0; }
.host-meta { margin-top: 2px; font-size: 13.5px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.host-meta:empty { display: none; }

.vote { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line); }
.vote p { font-size: 13.5px; color: var(--ink-2); }
.vote .row { margin-top: 10px; }
.tally { font-size: 13px; color: var(--ink-3); font-variant-numeric: tabular-nums; }

.onair h3 { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 13px; font-weight: 600; color: var(--ink-3); }
.empty { margin-top: 8px; font-size: 14px; color: var(--ink-3); }
.queue { list-style: none; margin: 8px 0 0; padding: 0; counter-reset: q; }
.queue li { counter-increment: q; display: flex; gap: 10px; padding: 5px 0; font-size: 14.5px; overflow-wrap: anywhere; }
.queue li::before { content: counter(q); width: 16px; flex: none; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.queue li.me { font-weight: 620; }

.counts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 22px 0 0; padding-top: 18px; border-top: 1px solid var(--line); }
.counts dt { font-size: 12.5px; color: var(--ink-3); }
.counts dd { margin: 2px 0 0; font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; }

footer { margin-top: 64px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 13px; color: var(--ink-3); max-width: 620px; }

.hidden { display: none !important; }

@media (max-width: 860px) {
  .layout { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .onair { position: static; }
}
@media (max-width: 520px) {
  .page { padding: 0 16px 32px; }
  .intro { padding: 32px 0 32px; }
  .intro p { font-size: 16px; }
  .step { grid-template-columns: 32px minmax(0, 1fr); gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .proof.checking::before { animation: none; }
}