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

:root {
  --sea-color: #002244;
  --sea-accent: #69BE28;
  --ne-color: #002244;
  --ne-accent: #C60C30;
  --bg-color: #1a1a2e;
  --card-bg: #16213e;
  --text-color: #eee;
  --text-muted: #888;
  --border-color: #333;
  --success-color: #4CAF50;
  --error-color: #f44336;
  --warning-color: #ff9800;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  line-height: 1.5;
}

.app-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem;
}

/* Header */
header {
  text-align: center;
  padding: 1.5rem 0;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 1rem;
}

header h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--sea-accent), var(--ne-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.teams {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  font-size: 1.1rem;
}

.team.sea {
  color: var(--sea-accent);
}

.team.ne {
  color: var(--ne-accent);
}

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

.countdown {
  margin-top: 1rem;
  font-size: 1.2rem;
  font-weight: bold;
}

.countdown.locked {
  color: var(--error-color);
}

.countdown.open {
  color: var(--success-color);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tab-btn {
  flex: 1;
  padding: 0.75rem 1rem;
  border: none;
  background: var(--card-bg);
  color: var(--text-muted);
  font-size: 1rem;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.2s;
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--sea-color), var(--ne-color));
  color: var(--text-color);
}

.tab-btn:hover:not(.active) {
  background: #1f2a4a;
}

/* Tab Content */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Existing Players */
.existing-players {
  background: var(--card-bg);
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.existing-players.hidden {
  display: none;
}

.existing-players label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.player-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.player-chip {
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--text-color);
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.player-chip:hover {
  background: var(--sea-accent);
  color: #000;
  border-color: var(--sea-accent);
}

/* Notice */
.notice {
  background: var(--card-bg);
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  border-left: 4px solid var(--warning-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.notice.hidden {
  display: none;
}

/* Form */
.form-header {
  background: var(--card-bg);
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.form-group {
  margin-bottom: 0.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="number"] {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background: var(--bg-color);
  color: var(--text-color);
  font-size: 1rem;
}

.form-group input:focus {
  outline: none;
  border-color: var(--sea-accent);
}

.lookup-result {
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

.lookup-result.found {
  color: var(--warning-color);
}

.lookup-result.available {
  color: var(--success-color);
}

/* Question Categories */
.question-category {
  background: var(--card-bg);
  border-radius: 8px;
  margin-bottom: 1rem;
  overflow: hidden;
}

.category-header {
  background: rgba(255, 255, 255, 0.05);
  padding: 0.75rem 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.category-header:hover {
  background: rgba(255, 255, 255, 0.08);
}

.category-content {
  padding: 0.5rem 1rem 1rem;
}

/* Questions */
.question {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.question:last-child {
  border-bottom: none;
}

.question-text {
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.question-line {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.question-options {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.option-btn {
  padding: 0.5rem 1rem;
  border: 2px solid var(--border-color);
  background: transparent;
  color: var(--text-color);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.9rem;
}

.option-btn:hover {
  border-color: var(--sea-accent);
}

.option-btn.selected {
  background: var(--sea-accent);
  border-color: var(--sea-accent);
  color: #000;
}

.option-btn.correct {
  background: var(--success-color);
  border-color: var(--success-color);
}

.option-btn.incorrect {
  background: var(--error-color);
  border-color: var(--error-color);
}

.option-btn:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

/* Tiebreaker input */
.tiebreaker-input {
  width: 80px;
  padding: 0.5rem;
  border: 2px solid var(--border-color);
  background: var(--bg-color);
  color: var(--text-color);
  border-radius: 4px;
  font-size: 1rem;
  text-align: center;
}

.tiebreaker-input:focus {
  outline: none;
  border-color: var(--sea-accent);
}

/* Form Actions */
.form-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 1rem;
  background: var(--card-bg);
  border-radius: 8px;
  position: sticky;
  bottom: 1rem;
}

.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--sea-accent);
  color: #000;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-primary:disabled {
  background: var(--text-muted);
  cursor: not-allowed;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

#form-status {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Locked State */
.form-locked {
  pointer-events: none;
  opacity: 0.7;
}

.form-locked .option-btn,
.form-locked input {
  cursor: not-allowed;
}

/* Leaderboard */
.leaderboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.status-bar {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
}

.leaderboard-table th,
.leaderboard-table td {
  padding: 0.75rem 1rem;
  text-align: left;
}

.leaderboard-table th {
  background: rgba(255, 255, 255, 0.05);
  font-weight: 600;
}

.leaderboard-table tbody tr {
  border-top: 1px solid var(--border-color);
  cursor: pointer;
  transition: background 0.2s;
}

.leaderboard-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.05);
}

.leaderboard-table .rank-1 {
  background: rgba(255, 215, 0, 0.1);
}

.leaderboard-table .rank-2 {
  background: rgba(192, 192, 192, 0.1);
}

.leaderboard-table .rank-3 {
  background: rgba(205, 127, 50, 0.1);
}

.score-cell {
  font-weight: bold;
  font-size: 1.1rem;
}

.no-data {
  text-align: center;
  color: var(--text-muted);
  padding: 2rem !important;
}

/* Player Detail */
.player-detail {
  margin-top: 1rem;
  background: var(--card-bg);
  border-radius: 8px;
  padding: 1rem;
}

.player-detail.hidden {
  display: none;
}

.player-detail h3 {
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

/* Footer */
footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 600px) {
  header h1 {
    font-size: 1.5rem;
  }

  .teams {
    font-size: 0.9rem;
  }

  .form-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

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

  .status-bar {
    flex-direction: column;
    gap: 0.25rem;
  }
}

/* Progress indicator */
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  margin-top: 0.5rem;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--sea-accent);
  transition: width 0.3s;
}

/* Animation */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.updating {
  animation: pulse 1s infinite;
}