:root {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  --border: #334155;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --green: #22c55e;
  --green-bg: rgba(34, 197, 94, 0.1);
  --red: #ef4444;
  --red-bg: rgba(239, 68, 68, 0.1);
  --yellow: #eab308;
  --yellow-bg: rgba(234, 179, 8, 0.1);
  --purple: #a855f7;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.3);
}

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

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

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

.header h1 {
  font-size: 20px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.header h1 span { color: var(--accent); }

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.live-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}

.tab {
  padding: 12px 20px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}

.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* Main content */
.main { padding: 24px; max-width: 1600px; margin: 0 auto; }

.section { display: none; }
.section.active { display: block; }

/* Stats cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.stat-card .label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.stat-card .value {
  font-size: 28px;
  font-weight: 700;
}

.stat-card .sub {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 4px;
}

.stat-card.green .value { color: var(--green); }
.stat-card.red .value { color: var(--red); }
.stat-card.accent .value { color: var(--accent); }
.stat-card.yellow .value { color: var(--yellow); }
.stat-card.purple .value { color: var(--purple); }

/* Filters */
.filters {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.filter-group label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-dim);
}

.filter-group select,
.filter-group input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 7px 12px;
  font-size: 13px;
  min-width: 140px;
}

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

.filter-actions {
  display: flex;
  gap: 8px;
  align-self: flex-end;
}

.btn {
  padding: 8px 16px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn:hover { background: var(--bg-hover); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }

/* Table */
.table-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}

.table-header h3 {
  font-size: 15px;
  font-weight: 600;
}

.table-info {
  font-size: 13px;
  color: var(--text-muted);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 10px 16px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  font-weight: 600;
}

td {
  padding: 12px 16px;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tr:hover td { background: var(--bg-hover); }
tr { cursor: pointer; }

.amount { font-weight: 600; font-variant-numeric: tabular-nums; }

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.badge-accepted { background: var(--green-bg); color: var(--green); }
.badge-refused { background: var(--red-bg); color: var(--red); }
.badge-unknown { background: var(--yellow-bg); color: var(--yellow); }

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 16px;
  border-top: 1px solid var(--border);
}

.pagination button {
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
}

.pagination button:hover:not(:disabled) { background: var(--bg-hover); }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }
.pagination .page-info { font-size: 13px; color: var(--text-muted); }

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  justify-content: center;
  align-items: flex-start;
  padding: 40px;
  overflow-y: auto;
}

.modal-overlay.active { display: flex; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  max-width: 800px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 { font-size: 17px; font-weight: 600; }

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
  padding: 4px;
}

.modal-close:hover { color: var(--text); }

.modal-body { padding: 24px; }

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.detail-section {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 16px;
}

.detail-section h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent);
  margin-bottom: 12px;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  font-size: 13px;
}

.detail-row .label { color: var(--text-muted); }
.detail-row .val { font-weight: 500; text-align: right; max-width: 60%; word-break: break-all; }

.ticket-section {
  grid-column: 1 / -1;
}

.ticket {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 16px;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  white-space: pre-wrap;
  line-height: 1.4;
  color: var(--text-muted);
  max-height: 300px;
  overflow-y: auto;
}

/* Sessions table */
.session-receipt {
  max-width: 400px;
  white-space: pre-wrap;
  font-family: monospace;
  font-size: 11px;
  color: var(--text-muted);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-dim);
}

.empty-state .icon { font-size: 48px; margin-bottom: 16px; opacity: 0.5; }
.empty-state h3 { font-size: 18px; margin-bottom: 8px; color: var(--text-muted); }

/* Responsive */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
  .detail-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .header { padding: 12px 16px; }
  .main { padding: 16px; }
  .filters { flex-direction: column; }
  .filter-group select, .filter-group input { min-width: auto; width: 100%; }
  table { font-size: 12px; }
  td, th { padding: 8px 10px; }
  .stat-card .value { font-size: 22px; }
  .modal-overlay { padding: 16px; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }