:root {
  --bg: #0f172a;
  --card: #1e293b;
  --accent: #f43f5e;
  --accent-dim: #7f1d2b;
  --green: #22c55e;
  --yellow: #eab308;
  --text: #e2e8f0;
  --muted: #94a3b8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.center-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.card {
  background: var(--card);
  border-radius: 16px;
  padding: 32px;
  width: 100%;
  max-width: 380px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.card h1 { margin-top: 0; }

.subtitle { color: var(--muted); margin: 8px 0 16px; }

#joinForm { display: flex; flex-direction: column; gap: 12px; }

input[type="text"], input[type="number"] {
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #334155;
  background: #0b1220;
  color: var(--text);
  font-size: 16px;
}

button {
  padding: 12px 16px;
  border-radius: 10px;
  border: none;
  background: var(--accent);
  color: white;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
}

button:hover { filter: brightness(1.1); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.error { color: var(--accent); min-height: 20px; }

hr { border: none; border-top: 1px solid #334155; margin: 20px 0; }

.host-link { color: #38bdf8; text-decoration: none; font-weight: 600; }

/* ----- Buzzer page ----- */
.buzzer-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 16px 40px;
  gap: 20px;
}

.topbar { display: flex; gap: 10px; align-self: stretch; justify-content: space-between; }

.pill {
  background: var(--card);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 14px;
}
.pill-muted { color: var(--muted); }

#roomCodePill {
  font-size: 21px; /* 50% bigger than the default 14px pill */
  font-weight: 700;
  padding: 9px 21px;
  letter-spacing: 1px;
}

.status-banner {
  padding: 10px 18px;
  border-radius: 10px;
  font-weight: 600;
  text-align: center;
}
.status-waiting { background: #334155; color: var(--muted); }
.status-armed { background: #14532d; color: #86efac; }
.status-winner { background: #713f12; color: #fde68a; }

.buzz-btn {
  width: min(70vw, 260px);
  height: min(70vw, 260px);
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fb7185, var(--accent));
  color: white;
  font-size: 42px;
  font-weight: 800;
  letter-spacing: 2px;
  border: none;
  box-shadow: 0 10px 0 var(--accent-dim), 0 15px 30px rgba(0,0,0,0.5);
  transition: transform 0.05s ease;
}
.buzz-btn:active:not(:disabled) { transform: translateY(6px); box-shadow: 0 4px 0 var(--accent-dim); }
.buzz-btn:disabled { background: #334155; box-shadow: 0 10px 0 #1e293b; color: var(--muted); }

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}
.hidden { display: none !important; }

.math-card {
  background: var(--card);
  border-radius: 16px;
  padding: 28px;
  text-align: center;
  width: min(90vw, 340px);
}
.equation { font-size: 48px; font-weight: 800; margin: 10px 0; }
.math-label { color: var(--muted); }
#answerForm { display: flex; gap: 8px; margin-top: 10px; }
#answerInput { flex: 1; text-align: center; font-size: 20px; }
.math-timer { margin-top: 12px; height: 6px; background: #334155; border-radius: 4px; overflow: hidden; }
.math-timer::after { content: ""; display: block; height: 100%; background: var(--yellow); }

.queue-panel { width: min(100%, 480px); }
.queue-list { padding-left: 20px; }
.queue-list li { margin-bottom: 6px; }
.q-correct { color: var(--green); font-weight: 700; }
.q-wrong, .q-timeout, .q-skipped { color: var(--muted); text-decoration: line-through; }
.q-pending { color: var(--yellow); font-weight: 700; }
.q-waiting { color: var(--muted); }

/* ----- Host page ----- */
.host-page { padding: 24px; max-width: 1000px; margin: 0 auto; }
.host-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }

.room-code-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  padding: 8px 14px;
  border-radius: 10px;
}
.room-code-label { color: var(--muted); font-size: 14px; }
.room-code-value {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 3px;
  color: #38bdf8;
}
.host-controls { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.difficulty-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
  background: var(--card);
  padding: 8px 12px;
  border-radius: 10px;
}
.difficulty-label select {
  background: #0b1220;
  color: var(--text);
  border: 1px solid #334155;
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 14px;
}
.btn { background: #334155; }
.btn-primary { background: var(--green); }
.btn-danger { background: var(--accent); }

.round-status { margin: 16px 0; padding: 10px 16px; background: var(--card); border-radius: 10px; font-weight: 600; }

.host-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 800px) { .host-columns { grid-template-columns: 1fr; } }

.panel { background: var(--card); border-radius: 12px; padding: 16px; }
.queue-table { width: 100%; border-collapse: collapse; }
.queue-table th, .queue-table td { text-align: left; padding: 8px; border-bottom: 1px solid #334155; font-size: 14px; }