*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #0f4b8a;
  --primary-dark: #0a3570;
  --primary-light: #e8f0fe;
  --success: #16a34a;
  --warning: #f59e0b;
  --danger: #dc2626;
  --info: #0ea5e9;
  --bg: #f0f4f8;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --radius-sm: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

.page-center {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

.container-wide {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

.form-container {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 40px 32px;
  width: 100%;
  max-width: 440px;
}

.header-logo {
  text-align: center;
  margin-bottom: 24px;
}

.header-logo img {
  max-width: 280px;
  height: auto;
}

.header-logo h1 {
  font-size: 1.5rem;
  color: var(--primary);
  margin-top: 8px;
  font-weight: 700;
}

.header-logo .subtitle {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-top: 4px;
}

.logo {
  text-align: center;
  margin-bottom: 32px;
}

.logo h1 {
  font-size: 2rem;
  color: var(--primary);
}

.subtitle {
  color: var(--text-light);
  font-size: 1rem;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.9rem;
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  transition: border-color 0.2s;
  background: #fff;
  font-family: inherit;
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  text-align: center;
  font-family: inherit;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-warning {
  background: var(--warning);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-small {
  padding: 6px 14px;
  font-size: 0.85rem;
}

.btn-block {
  display: block;
  width: 100%;
}

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.alert-error { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: var(--success); border: 1px solid #bbf7d0; }
.alert-warning { background: #fffbeb; color: #b45309; border: 1px solid #fde68a; }
.alert-info { background: #f0f9ff; color: var(--info); border: 1px solid #bae6fd; }

.text-center { text-align: center; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }

.top-bar {
  background: var(--card-bg);
  border-bottom: 3px solid var(--primary);
  padding: 16px 20px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
  position: sticky;
  top: 0;
  z-index: 100;
}

.top-bar-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.top-bar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.top-bar-logo img {
  height: 40px;
  width: auto;
}

.top-bar-title {
  font-weight: 700;
  color: var(--primary);
  font-size: 1.1rem;
}

.top-bar-team {
  color: var(--text-light);
  font-size: 0.95rem;
}

.main-content {
  padding: 32px 20px;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
  margin-bottom: 24px;
}

.card-success {
  background: linear-gradient(135deg, #f0fdf4, #dcfce7);
  border: 2px solid var(--success);
}

.enigma-box {
  background: #f8fafc;
  border-radius: var(--radius-sm);
  padding: 24px;
  margin: 16px 0;
  border-left: 4px solid var(--primary);
}

.question-box {
  background: #f8fafc;
  border-radius: var(--radius-sm);
  padding: 24px;
  margin: 16px 0;
}

.question-text {
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.7;
}

.dica-box {
  background: #fffbeb;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-top: 12px;
  border: 1px solid #fde68a;
}

.palavras-box {
  background: #e8f0fe;
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 16px;
}

.palavras-box h3 {
  font-size: 0.95rem;
  margin-bottom: 8px;
  color: var(--primary);
}

.palavras-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.palavra-tag {
  background: var(--primary);
  color: #fff;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
}

.timer-bar {
  text-align: center;
  padding: 16px;
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.timer-bar.warning {
  background: #fffbeb;
  color: #b45309;
}

.timer-bar.danger {
  background: #fef2f2;
  color: var(--danger);
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 16px auto;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal {
  background: #fff;
  border-radius: var(--radius);
  max-width: 440px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  overflow: hidden;
}

.modal-header {
  background: var(--danger);
  color: #fff;
  padding: 20px 24px;
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.penalty-warning {
  font-weight: 700;
  color: var(--danger);
  font-size: 1.1rem;
  margin-top: 8px;
}

.ranking-table-wrapper {
  overflow-x: auto;
}

.ranking-table {
  width: 100%;
  table-layout: auto;
  border-collapse: collapse;
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.ranking-table th, .ranking-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.ranking-table th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.ranking-table tr:last-child td {
  border-bottom: none;
}

.ranking-table tr.top-three td {
  font-weight: 600;
}

.ranking-table .pos {
  font-size: 1.2rem;
  text-align: center;
  width: 60px;
}

.ranking-table .team-name {
  font-weight: 600;
}

.ranking-table .tempo-final {
  font-weight: 700;
  color: var(--primary);
}

.qr-page h2 {
  text-align: center;
  margin-bottom: 8px;
  color: var(--primary);
}

.progress-bar {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: 16px 0;
  flex-wrap: wrap;
}

.progress-dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-light);
}

.progress-dot.completed {
  background: var(--success);
  color: #fff;
}

.progress-dot.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 0 0 4px rgba(15,75,138,0.2);
}

.membros-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.membro-tag {
  background: #f1f5f9;
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.85rem;
  color: var(--text);
}

.hidden { display: none !important; }

.admin-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 24px 20px;
  text-align: center;
}

.admin-header img {
  height: 60px;
  width: auto;
  margin-bottom: 8px;
}

.admin-header h1 {
  font-size: 1.3rem;
  font-weight: 700;
}

.footer-bar {
  text-align: center;
  padding: 16px 20px;
  color: var(--text-light);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

.footer-bar img {
  height: 28px;
  width: auto;
  vertical-align: middle;
  margin-right: 6px;
}

@media (max-width: 600px) {
  .form-container { padding: 24px 20px; }
  .card { padding: 20px; }
  .top-bar-title { font-size: 0.95rem; }
  .ranking-table th, .ranking-table td { padding: 10px 12px; font-size: 0.85rem; }
  .header-logo img { max-width: 180px; }
}