:root {
  --bg-primary: #0a0d12;
  --bg-surface: #121820;
  --bg-card: #182230;
  --bg-input: #0e141c;
  --border-color: #263344;
  --border-focus: #3b82f6;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-red: #ef4444;
  --accent-blue: #3b82f6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px 20px;
}

/* Header */
.admin-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.brand h1 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand .badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

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

/* Auth Section */
.auth-wrapper {
  max-width: 440px;
  margin: 80px auto;
  padding: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.auth-header {
  text-align: center;
  margin-bottom: 24px;
}

.auth-header h2 {
  font-size: 20px;
  margin-top: 12px;
}

.auth-header p {
  color: var(--text-secondary);
  font-size: 13px;
  margin-top: 6px;
}

/* Forms & Inputs */
.form-field {
  margin-bottom: 16px;
}

.form-field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

input, select, textarea {
  width: 100%;
  height: 42px;
  padding: 0 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 18px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-red);
  color: #ffffff;
}

.btn-primary:hover {
  background: #dc2626;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: #202c3e;
  border-color: #3b4d66;
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
  border-color: rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  background: var(--accent-red);
  color: #fff;
}

.btn-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border-color: rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
  background: var(--accent-emerald);
  color: #fff;
}

.btn-sm {
  height: 32px;
  padding: 0 10px;
  font-size: 12px;
}

.w-full {
  width: 100%;
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 18px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: rgba(59, 130, 246, 0.12);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
}

.stat-icon.red {
  background: rgba(239, 68, 68, 0.12);
  color: var(--accent-red);
}

.stat-icon.green {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
}

.stat-icon.amber {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
}

.stat-data .label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-data .value {
  font-size: 22px;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-top: 2px;
}

/* Panel Boxes */
.panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 24px;
}

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

.panel-header h3 {
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
}

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

th {
  background: var(--bg-card);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(38, 51, 68, 0.6);
  vertical-align: middle;
}

tr:hover td {
  background: rgba(24, 34, 48, 0.4);
}

code {
  font-family: var(--font-mono);
  background: var(--bg-input);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  color: #38bdf8;
}

/* Status Badges */
.badge-status {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-status.active {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-status.suspended {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-status.pending {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-status.paid {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
}

.modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 22px;
  cursor: pointer;
}

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

.hidden {
  display: none !important;
}

.pulse {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  margin-right: 6px;
}