:root {
  --bg-main: #0b1110;
  --bg-card: #141f1c;
  --bg-elevated: #1a2b26;
  --bg-input: #101b17;
  --border: #243b34;
  --border-focus: #10b981;
  --text-main: #f3f4f6;
  --text-muted: #9fb5a8;
  --accent: #10b981;
  --accent-hover: #059669;
  --accent-light: rgba(16, 185, 129, 0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.15);
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font);
  line-height: 1.5;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 16px;
}

header.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

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

.brand-badge {
  background: var(--accent-light);
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.brand h1 {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
}

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

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform 0.15s, border-color 0.15s;
}

.kpi-card:hover {
  border-color: var(--border-focus);
}

.kpi-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.kpi-value {
  font-size: 28px;
  font-weight: 800;
  color: #ffffff;
}

.kpi-desc {
  font-size: 11px;
  color: var(--text-muted);
}

.kpi-card.warning .kpi-value { color: var(--warning); }
.kpi-card.danger .kpi-value { color: var(--danger); }
.kpi-card.accent .kpi-value { color: var(--accent); }

/* Controls Toolbar */
.toolbar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.search-box {
  flex: 1;
  min-width: 240px;
  position: relative;
}

.search-box input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-main);
  padding: 9px 12px 9px 36px;
  font-size: 14px;
}

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

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 14px;
}

.filter-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-main);
  padding: 9px 12px;
  font-size: 13px;
  cursor: pointer;
  color-scheme: dark;
}

select option,
select optgroup {
  background-color: var(--bg-card, #141f1c) !important;
  color: var(--text-main, #f3f4f6) !important;
}

select:focus {
  outline: none;
  border-color: var(--accent);
}

button.primary {
  background: var(--accent);
  color: #0b1110;
  border: none;
  border-radius: 8px;
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.15s;
}

button.primary:hover {
  background: var(--accent-hover);
}

button.secondary {
  background: var(--bg-elevated);
  color: var(--text-main);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

button.secondary:hover {
  background: #233b34;
  border-color: var(--accent);
}

/* Workshops Table */
.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

th {
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 14px;
  border-bottom: 1px solid rgba(36, 59, 52, 0.4);
  vertical-align: middle;
}

tr:hover td {
  background: rgba(26, 43, 38, 0.4);
}

.workshop-name {
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.slug-badge {
  font-size: 11px;
  color: var(--text-muted);
  font-family: monospace;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}

.badge.active { background: var(--accent-light); color: var(--accent); }
.badge.suspended { background: var(--danger-bg); color: var(--danger); }
.badge.expiring { background: var(--warning-bg); color: var(--warning); }
.badge.pro { background: #3b284c; color: #c084fc; border: 1px solid rgba(192, 132, 252, 0.3); }
.badge.basic { background: #162a26; color: #a7f3d0; border: 1px solid rgba(167, 243, 208, 0.2); }
.badge.lifetime { background: #3d2d14; color: #fbbf24; border: 1px solid rgba(251, 191, 36, 0.35); }

.activity-badge {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  display: inline-block;
  font-weight: 600;
}

.activity-badge.healthy { color: var(--accent); }
.activity-badge.moderate { color: var(--text-muted); }
.activity-badge.churn_risk {
  background: var(--danger-bg);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.actions-cell {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

/* Modals */
dialog {
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  max-width: 480px;
  width: 90%;
  margin: auto;
  box-shadow: 0 20px 40px rgba(0,0,0,0.6);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  font-size: 17px;
  color: #ffffff;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
}

.close-btn:hover { color: #ffffff; }

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

.form-group label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 5px;
  font-weight: 600;
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-main);
  padding: 9px 12px;
  font-size: 13px;
}

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

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

/* Toast */
#toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-elevated);
  color: #ffffff;
  border: 1px solid var(--accent);
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  display: none;
  z-index: 1000;
}

#toast.show { display: block; animation: slideIn 0.2s ease-out; }
#toast.error { border-color: var(--danger); color: #fca5a5; }

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

/* Maintenance Section */
.maintenance-section {
  margin-top: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
}
.maintenance-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 14px;
}
.maintenance-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}
.maintenance-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 18px;
}
.storage-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}
.storage-stat-box {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
}
.storage-stat-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: block;
  margin-bottom: 4px;
}
.storage-stat-val {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
}