:root {
  --bg: #f3f7f8;
  --ink: #18222f;
  --muted: #5d6a75;
  --panel: #ffffff;
  --line: #d7e1e6;
  --accent: #0a7d91;
  --accent-strong: #075967;
  --good: #16784f;
  --bad: #b43434;
  --warn: #c77b17;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

button,
input,
select {
  font: inherit;
}

button,
.answer-button {
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  padding: 12px 16px;
  font-weight: 700;
  cursor: pointer;
}

button:hover,
.answer-button:hover {
  background: var(--accent-strong);
}

button.secondary {
  background: #e7eef2;
  color: var(--ink);
}

button.danger {
  background: var(--bad);
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 12px;
  background: white;
  color: var(--ink);
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-weight: 650;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px clamp(18px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
  background: white;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand,
nav a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 800;
}

nav {
  display: flex;
  gap: 14px;
}

main {
  width: min(1220px, 100%);
  margin: 0 auto;
  padding: clamp(18px, 4vw, 44px);
}

.screen {
  display: none;
}

.screen.active {
  display: block;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(280px, 420px) 1fr;
  gap: 24px;
  align-items: start;
}

.panel,
.board {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  box-shadow: 0 16px 40px rgb(24 34 47 / 8%);
}

.panel {
  display: grid;
  gap: 16px;
}

.board {
  margin-top: 24px;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1;
}

h2 {
  font-size: clamp(1.45rem, 3vw, 2.1rem);
}

.hint,
.muted {
  color: var(--muted);
  line-height: 1.5;
}

.toolbar {
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.hidden {
  display: none !important;
}

.question-form {
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 12px;
  margin: 0 0 14px;
  padding: 14px;
}

.question-form legend {
  color: var(--muted);
  font-weight: 800;
}

.room {
  display: grid;
  grid-template-columns: 1fr minmax(160px, 220px);
  gap: 22px;
}

.code {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 900;
  letter-spacing: 0;
  background: #f7fafb;
}

.qr {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.question-display {
  display: grid;
  gap: 18px;
}

.answers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.answer {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: #fbfdfe;
  min-height: 66px;
}

.answer.correct {
  border-color: var(--good);
  background: #eaf7f1;
}

.players {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.player {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: white;
}

.player.inactive {
  opacity: 0.55;
}

.avatar {
  width: 44px;
  height: 44px;
}

.stat {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.92rem;
}

.buzzer {
  min-height: 220px;
  width: 100%;
  font-size: clamp(2rem, 12vw, 5rem);
  background: var(--warn);
}

.status-line {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbfc;
  color: var(--muted);
}

@media (max-width: 800px) {
  .two-column,
  .room,
  .answers,
  .toolbar {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }
}