:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1a1f35;
  --bg-card-hover: #1f2545;
  --border-color: rgba(255,255,255,0.06);
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99,102,241,0.15);
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  --sidebar-width: 260px;
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* === SIDEBAR === */
.sidebar {
  position: fixed;
  left: 0; top: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
}

.sidebar-brand {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-brand img {
  width: 40px; height: 40px;
  border-radius: 10px;
}

.sidebar-brand h2 {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-light), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-item:hover {
  background: var(--accent-glow);
  color: var(--accent-light);
}

.nav-item.active {
  background: linear-gradient(135deg, rgba(99,102,241,0.2), rgba(139,92,246,0.1));
  color: var(--accent-light);
  border: 1px solid rgba(99,102,241,0.2);
}

.nav-item i { width: 20px; text-align: center; font-size: 16px; }

.sidebar-footer {
  padding: 16px 12px;
  border-top: 1px solid var(--border-color);
}

/* === MAIN CONTENT === */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  padding: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.topbar h1 {
  font-size: 20px;
  font-weight: 600;
}

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

.content-area { padding: 32px; }

/* === CARDS === */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.card-header h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
}

.card-body { padding: 24px; }

/* === STAT CARDS === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, border-color 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(99,102,241,0.3);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
}

.stat-card.purple::before { background: linear-gradient(90deg, #6366f1, #a78bfa); }
.stat-card.green::before { background: linear-gradient(90deg, #22c55e, #4ade80); }
.stat-card.red::before { background: linear-gradient(90deg, #ef4444, #f87171); }
.stat-card.yellow::before { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.stat-card.blue::before { background: linear-gradient(90deg, #3b82f6, #60a5fa); }

.stat-card .stat-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.stat-card.purple .stat-icon { background: rgba(99,102,241,0.15); color: #818cf8; }
.stat-card.green .stat-icon { background: rgba(34,197,94,0.15); color: #4ade80; }
.stat-card.red .stat-icon { background: rgba(239,68,68,0.15); color: #f87171; }
.stat-card.yellow .stat-icon { background: rgba(245,158,11,0.15); color: #fbbf24; }
.stat-card.blue .stat-icon { background: rgba(59,130,246,0.15); color: #60a5fa; }

.stat-card .stat-value {
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-card .stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* === TABLES === */
.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  --bs-table-bg: transparent !important;
  --bs-table-color: var(--text-primary) !important;
  color: var(--text-primary) !important;
  background: transparent !important;
}

table thead th {
  padding: 12px 16px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted) !important;
  background: var(--bg-card) !important;
  border-bottom: 1px solid var(--border-color) !important;
  border-top: none !important;
  white-space: nowrap;
}

table tbody td {
  padding: 14px 16px;
  font-size: 14px;
  color: var(--text-primary) !important;
  background: transparent !important;
  border-bottom: 1px solid var(--border-color) !important;
  vertical-align: middle;
}

table tbody tr {
  transition: background 0.15s;
  background: transparent !important;
}

table tbody tr:hover {
  background: rgba(99,102,241,0.06) !important;
}

/* === BADGES === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge-active {
  background: rgba(34,197,94,0.15);
  color: #4ade80;
}

.badge-expired {
  background: rgba(239,68,68,0.15);
  color: #f87171;
}

.badge-warning {
  background: rgba(245,158,11,0.15);
  color: #fbbf24;
}

.badge-info {
  background: rgba(59,130,246,0.15);
  color: #60a5fa;
}

.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  display: inline-block;
}

.badge-active .badge-dot { background: #4ade80; }
.badge-expired .badge-dot { background: #f87171; }
.badge-warning .badge-dot { background: #fbbf24; }

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #7c3aed);
  color: #fff;
}
.btn-primary:hover {
  background: linear-gradient(135deg, #4f46e5, #6d28d9);
  box-shadow: 0 4px 15px rgba(99,102,241,0.3);
  color: #fff;
}

.btn-success {
  background: rgba(34,197,94,0.15);
  color: #4ade80;
  border: 1px solid rgba(34,197,94,0.2);
}
.btn-success:hover { background: rgba(34,197,94,0.25); color: #4ade80; }

.btn-danger {
  background: rgba(239,68,68,0.15);
  color: #f87171;
  border: 1px solid rgba(239,68,68,0.2);
}
.btn-danger:hover { background: rgba(239,68,68,0.25); color: #f87171; }

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}
.btn-outline:hover {
  background: var(--accent-glow);
  color: var(--accent-light);
  border-color: rgba(99,102,241,0.3);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-icon {
  width: 36px; height: 36px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

/* === FORMS === */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-control::placeholder {
  color: var(--text-muted);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* === SEARCH BAR === */
.search-bar {
  position: relative;
  max-width: 320px;
}

.search-bar input {
  padding-left: 40px;
}

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

/* === MODAL === */
.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
}

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

.modal-header .modal-title {
  font-size: 18px;
  font-weight: 600;
}

.modal-header .btn-close {
  filter: invert(1);
}

.modal-body { padding: 24px; color: var(--text-primary) !important; }

.modal-footer {
  border-top: 1px solid var(--border-color);
  padding: 16px 24px;
}

/* === BOOTSTRAP DARK OVERRIDES === */
.modal-content, .modal-header, .modal-body, .modal-footer {
  background-color: var(--bg-card) !important;
  color: var(--text-primary) !important;
}

.card {
  --bs-card-bg: var(--bg-card) !important;
  --bs-card-color: var(--text-primary) !important;
  --bs-card-border-color: var(--border-color) !important;
  color: var(--text-primary) !important;
}

.form-control {
  --bs-body-bg: var(--bg-primary) !important;
  --bs-body-color: var(--text-primary) !important;
  color: var(--text-primary) !important;
  background-color: var(--bg-primary) !important;
  border-color: var(--border-color) !important;
}

.form-control:focus {
  color: var(--text-primary) !important;
  background-color: var(--bg-primary) !important;
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px var(--accent-glow) !important;
}

a { color: var(--accent-light); }
a:hover { color: var(--accent); }

/* === PAGINATION === */
.pagination {
  display: flex;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  justify-content: center;
}

.page-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-color);
  text-decoration: none;
  transition: all 0.2s;
}

.page-link:hover, .page-link.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* === TOOLBAR === */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

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

/* === EMPTY STATE === */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.3;
}

.empty-state p {
  font-size: 15px;
}

/* === CHARTS === */
.chart-container {
  position: relative;
  height: 280px;
}

/* === LOGIN PAGE === */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  background-image: 
    radial-gradient(ellipse at 20% 50%, rgba(99,102,241,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(139,92,246,0.06) 0%, transparent 50%);
}

.login-box {
  width: 100%;
  max-width: 420px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: 0 25px 50px rgba(0,0,0,0.3);
}

.login-box .logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-box .logo img {
  width: 64px; height: 64px;
  border-radius: 16px;
  margin-bottom: 16px;
}

.login-box .logo h1 {
  font-size: 24px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-light), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.login-box .logo p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}

.login-box .btn-primary {
  width: 100%;
  padding: 12px;
  font-size: 15px;
  font-weight: 600;
  justify-content: center;
}

/* === RESPONSIVE === */
.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
  padding: 8px;
}

@media (max-width: 991px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 30px rgba(0,0,0,0.5);
  }
  .main-content {
    margin-left: 0;
  }
  .sidebar-toggle {
    display: block;
  }
  .content-area {
    padding: 20px 16px;
  }
  .topbar {
    padding: 12px 16px;
  }
  .topbar h1 {
    font-size: 16px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .stat-card {
    padding: 16px;
  }
  .stat-card .stat-value {
    font-size: 24px;
  }
  .card-header {
    padding: 14px 16px;
    flex-wrap: wrap;
    gap: 8px;
  }
  .card-body {
    padding: 16px;
  }
  /* Table mobile scroll */
  .table-container {
    margin: 0 -16px;
    padding: 0 16px;
  }
  table thead th, table tbody td {
    padding: 10px 12px !important;
    font-size: 13px !important;
  }
  /* Dashboard grid to single column */
  div[style*="grid-template-columns: 1fr 1fr"] {
    display: flex !important;
    flex-direction: column !important;
  }
  /* Settings layout */
  div[style*="max-width:560px"] {
    max-width: 100% !important;
  }
  /* Form grids */
  div[style*="grid-template-columns:1fr 1fr"] {
    display: flex !important;
    flex-direction: column !important;
    gap: 0 !important;
  }
  /* Modal */
  .modal-dialog {
    margin: 16px;
  }
  /* Login */
  .login-box {
    margin: 16px;
    padding: 28px 20px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .toolbar-group {
    flex-wrap: wrap;
  }
  .search-bar {
    max-width: 100%;
    width: 100%;
  }
  .btn {
    padding: 8px 14px;
    font-size: 13px;
  }
  .stat-card .stat-value {
    font-size: 20px;
  }
  .stat-card .stat-label {
    font-size: 11px;
  }
  table thead th {
    font-size: 10px !important;
  }
  table tbody td {
    padding: 8px 8px !important;
    font-size: 12px !important;
  }
  .pagination {
    flex-wrap: wrap;
  }
}

/* Overlay for sidebar on mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 999;
}
.sidebar-overlay.active {
  display: block;
}

/* === ANIMATIONS === */
@keyframes fadeIn {
  from { opacity:0; transform:translateY(10px); }
  to { opacity:1; transform:translateY(0); }
}

.fade-in {
  animation: fadeIn 0.3s ease forwards;
}

/* === PASSWORD TOGGLE === */
.password-field {
  position: relative;
}

.password-field .toggle-pass {
  position: absolute;
  right: 12px; top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
}

/* === TOAST === */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  animation: slideIn 0.3s ease;
  min-width: 280px;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}