:root {
  --bg-dark: #080c14;
  --bg-card: rgba(18, 24, 38, 0.85);
  --bg-card-hover: rgba(28, 38, 58, 0.95);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-active: rgba(99, 102, 241, 0.4);
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --brand-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  overflow-x: hidden;
}

/* ==========================================
   AUTHENTICATION VIEW
   ========================================== */

.auth-wrapper {
  display: flex;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #1e1b4b 0%, #080c14 70%);
  padding: 20px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}

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

.superadmin-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: #a855f7;
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid rgba(168, 85, 247, 0.3);
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.brand-logo {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: #fff;
}

.brand-logo span {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-subtitle {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 4px;
}

.error-banner {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fca5a5;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 13px;
}

/* ==========================================
   APP LAYOUT & SIDEBAR
   ========================================== */

.app-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  background: rgba(12, 17, 29, 0.95);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 50;
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border-color);
}

.platform-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--primary);
  margin-bottom: 6px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--primary);
}

.sidebar-nav {
  flex: 1;
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 500;
  text-align: left;
  transition: all 0.2s ease;
  width: 100%;
}

.nav-item:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
}

.nav-item.active {
  color: #fff;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border-color);
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.avatar {
  width: 36px;
  height: 36px;
  background: var(--brand-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  color: #fff;
}

.user-meta {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-weight: 600;
  font-size: 13px;
}

.user-role {
  font-size: 11px;
  color: var(--primary);
}

/* ==========================================
   MAIN CONTENT & TOPBAR
   ========================================== */

.main-content {
  flex: 1;
  margin-left: 260px;
  padding: 24px 32px 48px;
  min-width: 0;
}

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

.header-titles h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.header-titles p {
  font-size: 13px;
  margin-top: 2px;
}

.topbar-actions {
  display: flex;
  gap: 10px;
}

/* ==========================================
   STATS GRID & KPI CARDS
   ========================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: transform 0.2s, border-color 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-active);
}

.stat-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  margin: 10px 0 4px;
  font-family: var(--font-sans);
}

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

.stat-card.stat-success .stat-value { color: var(--success); }
.stat-card.stat-warning .stat-value { color: var(--warning); }
.stat-card.stat-danger .stat-value { color: var(--danger); }
.stat-card.stat-brand .stat-value { color: var(--primary); }
.stat-card.stat-hot .stat-value { color: #f97316; }

/* ==========================================
   CARDS & TABLES
   ========================================== */

.section-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

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

.card-header h2 {
  font-size: 16px;
  font-weight: 600;
}

.action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  min-width: 260px;
}

.filter-group {
  display: flex;
  gap: 10px;
  align-items: center;
}

.table-responsive {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.data-table th {
  padding: 12px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-table td {
  padding: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  vertical-align: middle;
  font-size: 13px;
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* ==========================================
   BADGES & BUTTONS
   ========================================== */

.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-active, .badge-hot { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-trial, .badge-warm { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-suspended, .badge-cold { background: rgba(239, 68, 68, 0.15); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }
.badge-blocked { background: rgba(127, 29, 29, 0.3); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.4); }

.plan-badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
}

.plan-free { background: rgba(148, 163, 184, 0.15); color: #cbd5e1; }
.plan-starter { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.plan-pro { background: rgba(168, 85, 247, 0.15); color: #c084fc; }
.plan-enterprise { background: rgba(236, 72, 153, 0.15); color: #f472b6; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

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

.btn-brand {
  background: var(--brand-gradient);
  color: #fff;
}
.btn-brand:hover {
  opacity: 0.9;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
}

.btn-outline-danger {
  background: transparent;
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}
.btn-outline-danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

.btn-block {
  width: 100%;
}

.btn-lg {
  padding: 12px 20px;
  font-size: 14px;
}

/* ==========================================
   FORMS & INPUTS
   ========================================== */

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 9px 12px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: inherit;
  font-size: 13.5px;
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(0, 0, 0, 0.4);
}

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

.form-divider {
  border: 0;
  border-top: 1px solid var(--border-color);
  margin: 20px 0;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

/* ==========================================
   MODALS
   ========================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-card {
  width: 100%;
  max-width: 520px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-card.modal-lg {
  max-width: 760px;
}

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

.modal-header h3 {
  font-size: 17px;
  font-weight: 600;
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
}

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

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* Subtabs in manage tenant modal */
.tenant-manage-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(0, 0, 0, 0.25);
  padding: 16px;
  border-radius: var(--radius-md);
}

.tab-nav-row {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.sub-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
}

.sub-tab-btn.active {
  background: rgba(99, 102, 241, 0.15);
  color: #fff;
}

.subtab-pane {
  display: none;
  padding-top: 16px;
}

.subtab-pane.active {
  display: block;
}

.status-btn-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ==========================================
   TOAST NOTIFICATIONS
   ========================================== */

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 200;
}

.toast {
  padding: 12px 18px;
  background: #1e293b;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  animation: slideUp 0.3s ease;
}

.toast-success { border-left: 4px solid var(--success); }
.toast-error { border-left: 4px solid var(--danger); }
.toast-warning { border-left: 4px solid var(--warning); }
.toast-info { border-left: 4px solid var(--primary); }

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.hidden {
  display: none !important;
}

.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 14px; }
.mt-4 { margin-top: 20px; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.py-4 { padding-top: 24px; padding-bottom: 24px; }