:root {
  --bg: #0f0f0f;
  --surface: #1a1a2e;
  --surface2: #16213e;
  --primary: #e94560;
  --primary-hover: #ff6b6b;
  --accent: #0f3460;
  --text: #eee;
  --text-muted: #888;
  --success: #2ecc71;
  --warning: #f39c12;
  --danger: #e74c3c;
  --border: #333;
  --radius: 12px;
}

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

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

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

header h1 {
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.balance-badge {
  background: var(--accent);
  padding: 6px 14px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.9rem;
}

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

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover { background: var(--primary-hover); }

.btn-secondary {
  background: var(--accent);
  color: white;
}
.btn-secondary:hover { opacity: 0.85; }

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

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

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.card-header h2 {
  font-size: 1.1rem;
}

.card-header h3 {
  font-size: 1rem;
}

/* Status badges */
.status {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.status-draft { background: var(--text-muted); color: white; }
.status-active { background: var(--success); color: white; }
.status-completed { background: var(--accent); color: white; }
.status-cancelled { background: var(--danger); color: white; }

/* Forms */
.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9rem;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* Auction list */
.auction-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  cursor: pointer;
  transition: border-color 0.2s;
}

.auction-item:hover {
  border-color: var(--primary);
}

.auction-item-info h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.auction-item-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.auction-item-meta {
  text-align: right;
}

/* Timer */
.timer {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  padding: 16px;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

.timer.warning {
  color: var(--warning);
  animation: pulse 1s ease-in-out infinite;
}

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

/* Leaderboard */
.leaderboard {
  width: 100%;
  border-collapse: collapse;
}

.leaderboard th {
  text-align: left;
  padding: 8px 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.leaderboard td {
  padding: 10px 12px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
}

.leaderboard tr.winning {
  background: rgba(46, 204, 113, 0.1);
}

.leaderboard tr.winning td:first-child::before {
  content: "★ ";
  color: var(--success);
}

.leaderboard tr.losing {
  opacity: 0.6;
}

.leaderboard tr.you {
  background: rgba(233, 69, 96, 0.15);
  font-weight: 600;
}

/* Bid form */
.bid-section {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.bid-section input {
  flex: 1;
  padding: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
}

/* Round info */
.round-nav {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.round-tab {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  cursor: pointer;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  transition: all 0.2s;
}

.round-tab.active {
  background: var(--primary);
  border-color: var(--primary);
}

.round-tab.completed {
  background: var(--accent);
  border-color: var(--accent);
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.stat-item {
  text-align: center;
  padding: 12px;
  background: var(--surface2);
  border-radius: 8px;
}

.stat-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Anti-sniping indicator */
.anti-sniping-alert {
  background: rgba(243, 156, 18, 0.15);
  border: 1px solid var(--warning);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 12px;
  font-size: 0.85rem;
  color: var(--warning);
  text-align: center;
  animation: fadeIn 0.3s;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  z-index: 1000;
  transition: all 0.3s;
}

.toast.hidden {
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
}

.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--danger); }
.toast.warning { border-color: var(--warning); }

/* Login */
.login-container {
  max-width: 400px;
  margin: 80px auto;
  text-align: center;
}

.login-container h2 {
  margin-bottom: 24px;
  color: var(--primary);
}

/* Audit table */
.audit-table {
  width: 100%;
}

.audit-table tr td {
  padding: 8px 0;
}

.audit-table tr td:first-child {
  color: var(--text-muted);
}

.audit-table tr td:last-child {
  text-align: right;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* Responsive */
@media (max-width: 600px) {
  main { padding: 16px; }
  .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .timer { font-size: 1.5rem; }
}

.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mt-16 { margin-top: 16px; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.flex-between { display: flex; justify-content: space-between; align-items: center; }