:root {
  --bg: #070d18;
  --card: #111b2e;
  --text: #eef2ff;
  --muted: #94a3b8;
  --accent: #34d399;
  --accent2: #6366f1;
  --danger: #f87171;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: 'Noto Sans JP', system-ui, sans-serif;
  background: radial-gradient(circle at top, #14213d, var(--bg) 55%);
  color: var(--text);
}

.wrap {
  max-width: 24rem;
  margin: 0 auto;
  padding: 1.25rem 1rem 2.5rem;
}

.brand {
  text-align: center;
  margin-bottom: 1.25rem;
}

.brand-kicker {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  font-weight: 800;
}

.brand h1 {
  margin: 0.35rem 0 0;
  font-size: 1.35rem;
}

.brand p {
  margin: 0.4rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.card {
  background: var(--card);
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 1rem;
  padding: 1.1rem;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
}

.code-display {
  text-align: center;
  padding: 0.5rem 0 0.25rem;
}

.code-digits {
  font-size: clamp(2.6rem, 12vw, 3.4rem);
  font-weight: 800;
  letter-spacing: 0.22em;
  margin: 0;
  font-variant-numeric: tabular-nums;
}

.code-meta {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.timer-bar {
  height: 4px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.2);
  overflow: hidden;
  margin: 1rem 0 0.75rem;
}

.timer-bar > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  transition: width 1s linear;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 0.85rem;
}

.field label {
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 700;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: 0.75rem;
  background: #0b1220;
  color: var(--text);
  padding: 0.8rem 0.9rem;
  font-size: 1rem;
}

.field textarea {
  min-height: 5rem;
  resize: vertical;
}

.btn {
  width: 100%;
  min-height: 3rem;
  border: none;
  border-radius: 0.8rem;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent2), #4f46e5);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(148, 163, 184, 0.35);
  margin-top: 0.55rem;
}

.btn-danger {
  background: rgba(248, 113, 113, 0.12);
  color: var(--danger);
  border: 1px solid rgba(248, 113, 113, 0.35);
  margin-top: 0.55rem;
}

.hint,
.err {
  font-size: 0.84rem;
  line-height: 1.55;
  margin: 0.75rem 0 0;
}

.hint {
  color: var(--muted);
}

.err {
  color: var(--danger);
}

.hidden {
  display: none !important;
}

.camera-wrap {
  margin: 0.75rem 0;
  border-radius: 0.75rem;
  overflow: hidden;
  background: #000;
}

.camera-wrap video {
  width: 100%;
  display: block;
}

.actions-row {
  display: grid;
  gap: 0.5rem;
}