:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --ink: #14202e;
  --muted: #4d5b6b;
  --brand: #0b4f8a;
  --go: #137a3a;
  --go-hover: #0f6330;
  --stop: #c4231c;
  --stop-hover: #a01b15;
  --line: #d5dce4;
  --wait: #8a5a00;
  --wait-bg: #fff4d6;
  --live: #0f6330;
  --live-bg: #def5e6;
  --radius: 18px;
}

* { box-sizing: border-box; }
html { font-size: 20px; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.45;
}
[hidden] { display: none !important; }

.brand {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.9rem 1.5rem;
  background: var(--brand); color: #fff;
}
.brand-name { font-size: 1.5rem; font-weight: 700; letter-spacing: 0.01em; }
.brand-sub { font-size: 1.1rem; opacity: 0.9; }
.tag { font-size: 0.8rem; font-weight: 600; background: rgba(255,255,255,0.18); padding: 0.15rem 0.6rem; border-radius: 999px; vertical-align: middle; margin-left: 0.4rem; }

main { padding: 2rem 1rem 9rem; }
.card {
  max-width: 44rem; margin: 0 auto; padding: 2.5rem 2rem;
  background: var(--card); border-radius: var(--radius);
  box-shadow: 0 2px 14px rgba(20, 32, 46, 0.08);
  text-align: center;
}
.card-narrow { max-width: 30rem; text-align: left; }
h1 { font-size: 2.2rem; margin: 0 0 1rem; line-height: 1.2; }
.lead { font-size: 1.5rem; margin: 0 0 1.5rem; }
.hint { font-size: 1.8rem; }
.muted { color: var(--muted); font-size: 1.1rem; }
.trust { color: var(--muted); font-size: 1.05rem; margin: 2rem 0 0; }

.btn {
  font: inherit; font-weight: 700; cursor: pointer; border: 0; border-radius: 14px;
  text-decoration: none; display: inline-block;
  transition: background-color 0.15s;
}
.btn:focus-visible { outline: 4px solid #ffbf47; outline-offset: 3px; }
.btn-huge { font-size: 2.2rem; padding: 1.5rem 3.5rem; min-width: 70%; }
.btn-big { font-size: 1.4rem; padding: 0.9rem 2rem; }
.btn-small { font-size: 0.95rem; padding: 0.5rem 1rem; border-radius: 10px; }
.btn-go { background: var(--go); color: #fff; }
.btn-go:hover { background: var(--go-hover); }
.btn-stop { background: var(--stop); color: #fff; }
.btn-stop:hover { background: var(--stop-hover); }
.btn-secondary { background: #e6ecf2; color: var(--ink); }
.btn-secondary:hover { background: #d5dee8; }
.btn-ghost { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.6); }

.code {
  font-size: 5.5rem; font-weight: 800; letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  margin: 0.5rem 0 1.5rem; color: var(--brand);
}
.code-loading { color: var(--line); }
.status { font-size: 1.5rem; font-weight: 600; padding: 0.8rem 1rem; border-radius: 12px; margin: 0; }
.status-wait { background: var(--wait-bg); color: var(--wait); }
.status-live { background: var(--live-bg); color: var(--live); }
.control-area { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }

.stop-bar {
  position: fixed; left: 0; right: 0; bottom: 0;
  padding: 1rem; background: rgba(255,255,255,0.96);
  border-top: 2px solid var(--line); text-align: center;
  z-index: 10;
}
.stop-bar .btn-huge { min-width: min(36rem, 100%); }

/* forms (tech) */
label { display: block; font-weight: 600; margin: 0 0 0.4rem; }
input {
  font: inherit; font-size: 1.4rem; width: 100%;
  padding: 0.7rem 0.9rem; margin-bottom: 1.2rem;
  border: 2px solid var(--line); border-radius: 10px;
}
input:focus { outline: none; border-color: var(--brand); }
#code-input { font-size: 2.2rem; letter-spacing: 0.15em; font-variant-numeric: tabular-nums; }
.error { color: var(--stop); font-weight: 600; min-height: 1.4em; margin: 0.8rem 0 0; }

/* tech viewer */
body.tech main { padding: 1rem; }
.viewer { max-width: none; }
.viewer-bar { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.7rem; }
.spacer { flex: 1; }
.pill { font-size: 0.95rem; font-weight: 700; padding: 0.35rem 0.9rem; border-radius: 999px; }
.pill-wait { background: var(--wait-bg); color: var(--wait); }
.pill-live { background: var(--live-bg); color: var(--live); }
.pill-ended { background: #fde3e1; color: var(--stop); }
.video-wrap {
  position: relative; background: #0d1117; border-radius: 12px; overflow: hidden;
  height: calc(100vh - 9rem); display: flex; align-items: center; justify-content: center;
}
.video-wrap:fullscreen { border-radius: 0; height: 100vh; }
#remote { width: 100%; height: 100%; object-fit: contain; background: #0d1117; }
.video-overlay {
  position: absolute; inset: 0; display: flex; flex-direction: column; gap: 1rem;
  align-items: center; justify-content: center; color: #fff; background: rgba(13,17,23,0.85);
  font-size: 1.4rem; text-align: center; padding: 1rem;
}

@media (max-width: 640px) {
  html { font-size: 17px; }
  .card { padding: 1.8rem 1.1rem; }
  .code { font-size: 3.8rem; }
  .btn-huge { font-size: 1.8rem; padding: 1.2rem 1.5rem; min-width: 100%; }
}