:root {
  --bg: #1b1533;
  --bg-card: #2a2350;
  --bg-elevated: #352c63;
  --text: #f4f2ff;
  --muted: #b6afd6;
  --accent: #7c5cff;
  --accent-2: #ff4d8d;
  --good: #2bd97c;
  --bad: #ff5a5f;
  --opt-a: #e21b3c;
  --opt-b: #1368ce;
  --opt-c: #d89e00;
  --opt-d: #26890c;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    'Segoe UI',
    system-ui,
    -apple-system,
    sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 600px at 50% -10%, #3a2f70 0%, var(--bg) 60%);
  min-height: 100vh;
}

.wrap {
  max-width: 940px;
  margin: 0 auto;
  padding: 20px 16px 64px;
}

.brand {
  text-align: center;
  margin: 20px 0 8px;
}

.brand .logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand .logo-mark {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 900;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(124, 92, 255, 0.5);
}

.brand h1 {
  font-size: 2.6rem;
  margin: 0;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand h1 span {
  -webkit-text-fill-color: var(--accent-2);
}

.brand p {
  color: var(--muted);
  margin: 6px 0 0;
}

.brand .org {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #fff;
  background: rgba(124, 92, 255, 0.35);
  border: 1px solid var(--accent);
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 700;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin: 16px 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 640px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

h2 {
  margin-top: 0;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin: 12px 0 6px;
}

input[type='text'],
input[type='number'] {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #4a3f80;
  background: var(--bg-elevated);
  color: var(--text);
  font-size: 1rem;
}

input::placeholder {
  color: #8f86bd;
}

button {
  cursor: pointer;
  border: none;
  border-radius: 12px;
  padding: 12px 18px;
  font-size: 1rem;
  font-weight: 600;
  color: white;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition:
    transform 0.08s ease,
    opacity 0.2s ease;
}

button:hover {
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

button.ghost {
  background: transparent;
  border: 1px solid #5a4f95;
  color: var(--text);
}

button.secondary {
  background: var(--bg-elevated);
  border: 1px solid #5a4f95;
}

button.danger {
  background: rgba(255, 90, 95, 0.15);
  border: 1px solid rgba(255, 90, 95, 0.55);
  color: #ff8a8e;
}

button.danger:hover {
  background: rgba(255, 90, 95, 0.25);
}

button.small {
  padding: 8px 12px;
  font-size: 0.85rem;
}

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.spacer {
  flex: 1;
}

.hidden {
  display: none !important;
}

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

/* Barra superior com botão "voltar ao início" */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.pill {
  display: inline-block;
  background: var(--bg-elevated);
  border-radius: 999px;
  padding: 6px 14px;
  margin: 4px;
  font-weight: 600;
}

.code-badge {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: 6px;
  text-align: center;
  padding: 16px;
  background: var(--bg-elevated);
  border-radius: var(--radius);
}

.notice {
  border-radius: 10px;
  padding: 10px 14px;
  margin: 10px 0;
}

.notice.error {
  background: rgba(255, 90, 95, 0.15);
  border: 1px solid var(--bad);
}

.notice.ok {
  background: rgba(43, 217, 124, 0.15);
  border: 1px solid var(--good);
}

/* Grade de opções (estilo Kahoot) */
.options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

@media (max-width: 640px) {
  .options {
    grid-template-columns: 1fr;
  }
}

.option {
  min-height: 88px;
  border-radius: 14px;
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 16px;
}

.option:nth-child(1) {
  background: var(--opt-a);
}
.option:nth-child(2) {
  background: var(--opt-b);
}
.option:nth-child(3) {
  background: var(--opt-c);
}
.option:nth-child(4) {
  background: var(--opt-d);
}

.option.dim {
  opacity: 0.4;
}

.question-text {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin: 12px 0;
}

.timer {
  text-align: center;
  font-size: 1.1rem;
  color: var(--muted);
}

/* Ranking / pódio */
.rank-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
}

.rank-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--bg-elevated);
  margin-bottom: 8px;
}

.rank-list .pos {
  font-weight: 800;
  width: 28px;
  text-align: center;
  color: var(--accent-2);
}

.podium {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 12px;
  margin: 24px 0;
}

.podium .place {
  border-radius: 14px 14px 0 0;
  padding: 16px 14px;
  text-align: center;
  min-width: 90px;
  background: var(--bg-elevated);
}

.podium .place .name {
  font-weight: 700;
}

.podium .place .score {
  color: var(--muted);
}

.podium .p1 {
  height: 180px;
  background: linear-gradient(180deg, #ffd54a, #c99700);
  color: #2a2350;
}
.podium .p2 {
  height: 140px;
  background: linear-gradient(180deg, #d9dee6, #9aa3b2);
  color: #2a2350;
}
.podium .p3 {
  height: 110px;
  background: linear-gradient(180deg, #e6a663, #b06f28);
  color: #2a2350;
}

.medal {
  font-size: 1.8rem;
}

.feedback {
  text-align: center;
  padding: 24px;
  border-radius: var(--radius);
  font-size: 1.4rem;
  font-weight: 700;
}

.feedback.correct {
  background: rgba(43, 217, 124, 0.2);
  border: 1px solid var(--good);
}

.feedback.wrong {
  background: rgba(255, 90, 95, 0.2);
  border: 1px solid var(--bad);
}

.builder-question {
  border: 1px solid #4a3f80;
  border-radius: 12px;
  padding: 16px;
  margin: 12px 0;
}

.builder-option {
  display: flex;
  gap: 8px;
  align-items: center;
  margin: 6px 0;
}

.builder-option input[type='text'] {
  flex: 1;
}

/* Painel de entrada (QR + código) no lobby */
.join-panel {
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 8px;
}

.join-qr {
  text-align: center;
}

.qr-image {
  width: 240px;
  height: 240px;
  max-width: 100%;
  border-radius: 14px;
  background: #fff;
  padding: 10px;
  box-shadow: var(--shadow);
}

.join-code {
  flex: 1;
  min-width: 220px;
}

.join-url {
  word-break: break-all;
  font-size: 0.85rem;
  margin-top: 10px;
}

/* Lista de quizzes (painel do master) */
.quiz-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--bg-elevated);
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.quiz-item .quiz-meta {
  flex: 1;
  min-width: 200px;
}

.quiz-item .quiz-title {
  font-weight: 700;
  font-size: 1.1rem;
}

.quiz-item .quiz-sub {
  color: var(--muted);
  font-size: 0.85rem;
}

.quiz-item .quiz-code {
  font-family: 'Consolas', monospace;
  color: var(--accent-2);
}