:root {
  --primary: #00a651;
  --primary-dark: #008c44;
  --danger: #e53935;
  --warning: #ff9800;
  --bg: #0f1419;
  --surface: #1a2332;
  --surface-light: #243044;
  --text: #e8edf5;
  --text-muted: #8899aa;
  --border: #2d3a4f;
  --radius: 12px;
}

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

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

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px;
}

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

.header h1 {
  font-size: 1.75rem;
  margin-bottom: 8px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.status-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 32px;
}

.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--warning);
  flex-shrink: 0;
}

.status-dot.ok { background: var(--primary); }
.status-dot.error { background: var(--danger); }

.section {
  margin-bottom: 32px;
}

.section h2 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.table-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.table-card h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.table-card .meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.table-card .qr-wrap {
  background: #fff;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 16px;
  display: inline-block;
}

.table-card .qr-wrap img {
  display: block;
  width: 180px;
  height: 180px;
}

.table-card .actions {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn:hover { opacity: 0.85; }

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

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

.order-list {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.order-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.order-item:last-child { border-bottom: none; }

.order-item .badge {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge.pending { background: #3d3520; color: var(--warning); }
.badge.awaiting_pin { background: #1a3040; color: #64b5f6; }
.badge.paid { background: #1a3028; color: var(--primary); }
.badge.failed { background: #3d2020; color: var(--danger); }

.badge.refunded { background: #2a2040; color: #b39ddb; }

.badge.sandbox_timeout { background: #1a3040; color: #64b5f6; }

.empty {
  padding: 24px;
  text-align: center;
  color: var(--text-muted);
}

.info-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.info-list {
  padding-left: 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.info-list li { margin-bottom: 8px; }

.info-list code {
  background: var(--surface-light);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85rem;
}

.info-list a { color: var(--primary); }

/* Pay page */
.pay-page {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #0f1419 0%, #1a2836 50%, #0f1419 100%);
}

.pay-container {
  width: 100%;
  max-width: 420px;
}

.pay-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.pay-header {
  text-align: center;
  margin-bottom: 28px;
}

.pay-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.pay-header h1 {
  font-size: 1.5rem;
  margin-bottom: 4px;
}

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

.pay-info {
  background: var(--surface-light);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 24px;
}

.info-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 0.95rem;
}

.price-row {
  border-top: 1px solid var(--border);
  margin-top: 4px;
  padding-top: 12px;
}

.price {
  color: var(--primary);
  font-size: 1.3rem;
}

.pay-form label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.pay-form input {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 8px;
}

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

.hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.pay-form .btn-primary {
  width: 100%;
  padding: 16px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  cursor: pointer;
}

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

.hidden { display: none !important; }

.pay-status {
  text-align: center;
  padding: 24px 0;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

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

.order-id {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 8px;
}

.pay-result {
  text-align: center;
  padding: 16px 0;
}

.result-icon {
  font-size: 3.5rem;
  margin-bottom: 12px;
}

.pay-result h2 {
  margin-bottom: 8px;
}

.receipt {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.pay-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.sandbox-hint {
  background: #2a2418;
  border: 1px solid #5c4a20;
  border-radius: 8px;
  padding: 10px 12px;
  line-height: 1.5;
  color: #e6c878;
}

.sandbox-btn {
  margin-top: 16px;
  width: 100%;
  padding: 14px;
  font-size: 0.95rem;
  background: #2563eb;
  border: none;
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
}

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

@media (max-width: 480px) {
  .pay-card { padding: 24px 16px; }
  .header h1 { font-size: 1.4rem; }
}

/* ========== Admin Panel ========== */
.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  text-align: left;
}

.header-actions {
  display: flex;
  gap: 8px;
}

.login-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  width: 100%;
  max-width: 360px;
}

.login-card h2 {
  text-align: center;
  margin-bottom: 24px;
}

.login-card input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  margin-bottom: 16px;
}

.login-card .btn-primary {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.login-hint {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 12px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.stat-card.highlight {
  border-color: var(--primary);
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.stat-card strong {
  font-size: 1.4rem;
}

.table-stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.table-stat-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.table-stat-item span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.filter-bar input,
.filter-bar select {
  padding: 8px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9rem;
}

.filter-bar input[type="text"] {
  min-width: 180px;
}

.admin-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.admin-table th,
.admin-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.admin-table th {
  background: var(--surface-light);
  color: var(--text-muted);
  font-weight: 600;
  white-space: nowrap;
}

.admin-table tbody tr:hover {
  background: var(--surface-light);
}

.empty-cell {
  text-align: center;
  color: var(--text-muted);
  padding: 24px !important;
}

.btn-link {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0 4px;
}

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

.pagination {
  display: flex;
  gap: 6px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.page-btn {
  padding: 6px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  cursor: pointer;
}

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

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 16px;
}

.modal-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
}

.detail-list {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 8px 12px;
  font-size: 0.9rem;
}

.detail-list dt {
  color: var(--text-muted);
}

.detail-list dd {
  margin: 0;
  word-break: break-all;
}