:root {
  --primary: #6c5ce7;
  --primary-dark: #5a4bd1;
  --secondary: #00cec9;
  --bg-dark: #0a0a1a;
  --bg-card: #12122a;
  --bg-sidebar: #0e0e22;
  --text-primary: #ffffff;
  --text-secondary: #a0a0c0;
  --border-color: #2a2a4a;
  --danger: #e74c3c;
  --success: #2ecc71;
  --warning: #f39c12;
}

* { box-sizing: border-box; }

body {
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  margin: 0;
  min-height: 100vh;
}

/* Login Page */
.login-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #0a0a1a 0%, #1a1a3e 50%, #0a0a1a 100%);
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: 20px;
}

.login-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 40px;
  border: 1px solid var(--border-color);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

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

.login-header .logo-icon {
  font-size: 48px;
  color: var(--primary);
  display: block;
  margin-bottom: 12px;
}

.login-header h1 {
  font-size: 28px;
  font-weight: 700;
  margin: 0;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.login-header p {
  color: var(--text-secondary);
  margin: 4px 0 0;
}

/* Dashboard Layout */
.dashboard-layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform 0.3s;
}

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

.sidebar-brand i {
  font-size: 28px;
  color: var(--primary);
}

.sidebar-brand h2 {
  font-size: 22px;
  margin: 0;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 10px;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 4px;
  transition: all 0.2s;
  cursor: pointer;
}

.nav-item:hover {
  background: rgba(108, 92, 231, 0.1);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--primary);
  color: white;
}

.nav-item i {
  font-size: 18px;
  width: 24px;
  text-align: center;
}

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

/* Main Content */
.main-content {
  margin-left: 260px;
  flex: 1;
  min-height: 100vh;
}

.topbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar h3 {
  margin: 0;
  font-size: 20px;
}

.content-area {
  padding: 24px;
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.stat-icon.purple { background: rgba(108, 92, 231, 0.2); color: var(--primary); }
.stat-icon.green { background: rgba(46, 204, 113, 0.2); color: var(--success); }
.stat-icon.blue { background: rgba(0, 206, 201, 0.2); color: var(--secondary); }
.stat-icon.orange { background: rgba(243, 156, 18, 0.2); color: var(--warning); }

.stat-info h4 {
  font-size: 24px;
  margin: 0;
  font-weight: 700;
}

.stat-info p {
  margin: 2px 0 0;
  color: var(--text-secondary);
  font-size: 13px;
}

/* Cards/Panels */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  margin-bottom: 24px;
  overflow: hidden;
}

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

.panel-header h5 {
  margin: 0;
  font-size: 16px;
}

.panel-body {
  padding: 20px;
}

/* Tables */
.table-dark-custom {
  width: 100%;
  border-collapse: collapse;
}

.table-dark-custom th {
  background: rgba(108, 92, 231, 0.1);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.table-dark-custom td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  font-size: 14px;
  vertical-align: middle;
}

.table-dark-custom tr:hover {
  background: rgba(108, 92, 231, 0.05);
}

/* Badges */
.badge-active {
  background: rgba(46, 204, 113, 0.2);
  color: var(--success);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge-inactive {
  background: rgba(231, 76, 60, 0.2);
  color: var(--danger);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

/* Forms */
.form-control, .form-select {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: 8px;
  padding: 10px 14px;
}

.form-control:focus, .form-select:focus {
  background: var(--bg-dark);
  border-color: var(--primary);
  color: var(--text-primary);
  box-shadow: 0 0 0 2px rgba(108, 92, 231, 0.25);
}

.form-label {
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
}

.input-group-text {
  background: var(--border-color);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

/* Buttons */
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.btn-outline-primary {
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline-primary:hover {
  background: var(--primary);
  color: white;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 13px;
}

/* Pagination */
.pagination-custom {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  margin-top: 20px;
}

.pagination-custom button {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
}

.pagination-custom button:hover {
  border-color: var(--primary);
}

.pagination-custom button.active {
  background: var(--primary);
  border-color: var(--primary);
}

.pagination-custom button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.modal-header {
  border-bottom-color: var(--border-color);
}

.modal-footer {
  border-top-color: var(--border-color);
}

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

/* Search bar */
.search-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.search-bar .form-control,
.search-bar .form-select {
  max-width: 300px;
}

/* Channel logo */
.channel-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
  background: var(--bg-dark);
}

/* Loading */
.spinner-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 60px 20px;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* Toast notification */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
}

.toast-msg {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 14px 20px;
  margin-bottom: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 0.3s ease;
  min-width: 280px;
}

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

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

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .search-bar .form-control,
  .search-bar .form-select {
    max-width: 100%;
  }
}

/* Upload area */
.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.upload-area:hover {
  border-color: var(--primary);
  background: rgba(108, 92, 231, 0.05);
}

.upload-area i {
  font-size: 48px;
  color: var(--primary);
  display: block;
  margin-bottom: 12px;
}

/* Progress bar */
.progress-bar-custom {
  height: 8px;
  background: var(--bg-dark);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 12px;
}

.progress-bar-custom .fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 4px;
  transition: width 0.3s;
}