/* Duet — the room with the lights off.
   Palette reads as a dark room lit by a screen: blue-black walls, a warm
   projector lamp for your own marks, a rose for theirs. */

@import url('https://fonts.googleapis.com/css2?family=Bodoni+Moda:opsz,wght@6..96,400;6..96,600&family=IBM+Plex+Mono:wght@400;500&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root {
  --ink: #0a0e1a;
  --velvet: #141b30;
  --haze: #232c4a;
  --lamp: #f5c36b;
  --rose: #e0708a;
  --paper: #e8e6f0;
  --dim: #8a90a8;
  --good: #7fd1a8;

  --display: 'Bodoni Moda', 'Didot', Georgia, serif;
  --body: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', monospace;

  --r: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
}

body {
  background-image: radial-gradient(120% 70% at 50% -10%, #16203a 0%, var(--ink) 60%);
  background-attachment: fixed;
}

a { color: var(--lamp); }

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 28px 20px 96px;
}

/* ------------------------------------------------------------- typography */

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
}

h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(38px, 11vw, 60px);
  line-height: 0.95;
  letter-spacing: -0.01em;
  margin: 10px 0 6px;
}

h1 em { font-style: italic; color: var(--lamp); }

h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: 22px;
  margin: 30px 0 10px;
}

p { line-height: 1.55; color: #c9cbdd; }
.lede { font-size: 16px; }
.small { font-size: 13px; color: var(--dim); line-height: 1.5; }

/* ---------------------------------------------------------------- surface */

.card {
  background: var(--velvet);
  border: 1px solid var(--haze);
  border-radius: var(--r);
  padding: 18px;
  margin: 14px 0;
}

/* ------------------------------------------- signature: the timecode strip */

.strip {
  background: #070a13;
  border: 1px solid var(--haze);
  border-radius: var(--r);
  padding: 16px 16px 12px;
  font-family: var(--mono);
}

.strip-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 5px 0;
}

.strip-who { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--dim); }
.strip-tc { font-size: 20px; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.you .strip-tc { color: var(--lamp); }
.them .strip-tc { color: var(--rose); }

/* Two hairlines that visibly pull together as the players converge. */
.rails { position: relative; height: 26px; margin: 8px 0 4px; }
.rail {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  border-radius: 2px;
  transition: transform 420ms cubic-bezier(.22,.8,.3,1);
}
.rail.you { background: var(--lamp); top: 6px; }
.rail.them { background: var(--rose); top: 18px; }

.delta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--haze);
  margin-top: 8px;
  padding-top: 10px;
  font-size: 12px;
  color: var(--dim);
}
.delta b { font-size: 15px; font-variant-numeric: tabular-nums; color: var(--paper); font-weight: 500; }
.delta.locked b { color: var(--good); }

/* ---------------------------------------------------------------- controls */

a.btn { display: inline-block; text-decoration: none; text-align: center; }

.btn {
  font-family: var(--body);
  font-size: 15px;
  font-weight: 500;
  padding: 12px 18px;
  border-radius: var(--r);
  border: 1px solid var(--haze);
  background: var(--velvet);
  color: var(--paper);
  cursor: pointer;
  transition: border-color 140ms ease, transform 140ms ease;
}
.btn:hover { border-color: var(--dim); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--lamp); border-color: var(--lamp); color: #1a1206; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.wide { width: 100%; }
.btn:focus-visible, input:focus-visible { outline: 2px solid var(--lamp); outline-offset: 2px; }

.row { display: flex; gap: 10px; flex-wrap: wrap; }
.row > * { flex: 1 1 auto; }

input[type='text'], input[type='url'] {
  font-family: var(--mono);
  font-size: 16px;
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--r);
  border: 1px solid var(--haze);
  background: #070a13;
  color: var(--paper);
}
input::placeholder { color: #545a75; }

.code {
  font-family: var(--mono);
  font-size: 30px;
  letter-spacing: 0.2em;
  color: var(--lamp);
}

/* ------------------------------------------------------------------ misc */

.dot { width: 7px; height: 7px; border-radius: 50%; background: #4a5170; display: inline-block; }
.dot.on { background: var(--good); }

.chatlog { max-height: 230px; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; }
.msg { font-size: 14px; line-height: 1.45; }
.msg .who { font-family: var(--mono); font-size: 11px; color: var(--dim); text-transform: uppercase; letter-spacing: 0.1em; }
.msg.mine .who { color: var(--lamp); }

/* --------------------------------------------------------- countdown cue */

.cue {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  background: rgba(7, 10, 19, 0.94);
  z-index: 50;
}
.cue.show { display: grid; }
.cue-n {
  font-family: var(--display);
  font-size: clamp(120px, 46vw, 300px);
  line-height: 1;
  color: var(--lamp);
}
.cue-label { font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.3em; font-size: 12px; color: var(--dim); text-align: center; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}