:root {
  --bg: #0f172a; --card: #1e293b; --line: #334155; --fg: #e2e8f0; --muted: #94a3b8;
  --accent: #38bdf8; --ok: #4ade80; --warn: #fbbf24; --bad: #f87171;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.45 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard", sans-serif;
  padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
main { max-width: 560px; margin: 0 auto; padding: 16px; }
h1 { font-size: 20px; margin: 8px 0 16px; }
h2 { font-size: 16px; margin: 20px 0 8px; color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px; margin-bottom: 12px; }
.row { display: flex; gap: 8px; align-items: center; }
.row > * { flex: 1; }
label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
input, select { width: 100%; background: #0b1220; color: var(--fg); border: 1px solid var(--line); border-radius: 10px; padding: 12px; font-size: 16px; }
button { width: 100%; background: var(--accent); color: #04121c; border: 0; border-radius: 12px; padding: 14px; font-size: 16px; font-weight: 700; margin-top: 12px; }
button.ghost { background: transparent; color: var(--fg); border: 1px solid var(--line); }
button.danger { background: var(--bad); color: #fff; }
button:disabled { opacity: .5; }
.badge { display: inline-block; white-space: nowrap; font-size: 12px; padding: 3px 8px; border-radius: 999px; background: #0b1220; border: 1px solid var(--line); }
.badge.SEARCHING { border-color: var(--accent); color: var(--accent); }
.badge.RESERVED { border-color: var(--warn); color: var(--warn); }
.badge.PAID { border-color: var(--ok); color: var(--ok); }
.badge.BLOCKED { border-color: var(--bad); color: var(--bad); }
.muted { color: var(--muted); font-size: 13px; }
.countdown { font-size: 44px; font-weight: 800; text-align: center; letter-spacing: 1px; margin: 10px 0; }
.countdown.low { color: var(--bad); }
.log { font-size: 12px; color: var(--muted); border-top: 1px solid var(--line); padding-top: 6px; margin-top: 6px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 10px; }
.chip { width: auto; margin: 0; padding: 6px 12px; font-size: 13px; font-weight: 600; border-radius: 999px; background: #0b1220; color: var(--muted); border: 1px solid var(--line); }
.chip.on { background: var(--accent); color: #04121c; border-color: var(--accent); }
nav { position: fixed; bottom: 0; left: 0; right: 0; display: flex; background: var(--card); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); }
nav a { flex: 1; text-align: center; padding: 14px 0; color: var(--muted); text-decoration: none; font-size: 13px; }
nav a.active { color: var(--accent); }
.err { color: var(--bad); font-size: 13px; margin-top: 8px; }

.pulse-bar { height: 4px; border-radius: 2px; background: #0b1220; border: 1px solid var(--line); overflow: hidden; margin: 8px 0 6px; }
.pulse-bar > i { display: block; height: 100%; width: 0; background: var(--ok); transition: width .9s linear; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); margin-right: 6px; vertical-align: middle; animation: pulse-blink 2s ease-in-out infinite; }
.dot.off { background: var(--bad); animation: none; }
.live { font-variant-numeric: tabular-nums; }
@keyframes pulse-blink { 0%, 100% { opacity: 1 } 50% { opacity: .25 } }