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

:root {
    --primary: #00ffff;
    --primary-dark: #00cccc;
    --bg-dark: #0a0e27;
    --bg-card: #141c32;
    --bg-hover: #1a2540;
    --text-primary: #ffffff;
    --text-secondary: #8892b0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --sidebar-width: 260px;
    --sidebar-collapsed: 70px;
}

body {
    background: var(--bg-dark);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-primary);
    display: flex;
}

.auth-pending { display: none !important; }

.auth-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    width: 100%;
    flex-direction: column;
    gap: 20px;
}

.auth-loading .spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(0, 255, 255, 0.2);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

#adminContent {
    display: flex;
    width: 100%;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-card);
    border-right: 1px solid rgba(0, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 1000;
    transition: width 0.3s ease, transform 0.3s ease;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .user-info span,
.sidebar.collapsed .logout-btn span {
    display: none;
}

.sidebar.collapsed .nav-item {
    justify-content: center;
    padding: 15px;
}

.sidebar.collapsed .nav-item i {
    margin-right: 0;
    font-size: 1.3em;
}

.sidebar-header {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(0, 255, 255, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--primary);
}

.logo i {
    font-size: 1.8em;
    text-shadow: 0 0 10px var(--primary);
}

.logo-text {
    font-size: 1.4em;
    font-weight: 700;
    letter-spacing: 2px;
}

.sidebar-toggle {
    background: transparent;
    border: none;
    color: var(--primary);
    font-size: 1.2em;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: background 0.3s;
}

.sidebar-toggle:hover {
    background: rgba(0, 255, 255, 0.1);
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 14px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
    border-left: 3px solid transparent;
    margin: 4px 0;
}

.nav-item i {
    margin-right: 12px;
    font-size: 1.1em;
    width: 24px;
    text-align: center;
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--primary);
}

.nav-item.active {
    background: rgba(0, 255, 255, 0.1);
    color: var(--primary);
    border-left-color: var(--primary);
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid rgba(0, 255, 255, 0.1);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 0.85em;
    margin-bottom: 12px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-info i {
    color: var(--primary);
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--danger);
    text-decoration: none;
    font-size: 0.9em;
    padding: 10px;
    border-radius: 8px;
    transition: background 0.3s;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.1);
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 0;
    transition: margin-left 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-collapsed);
}

.top-header {
    background: var(--bg-card);
    padding: 20px 30px;
    border-bottom: 1px solid rgba(0, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-header h1 {
    font-size: 1.5em;
    font-weight: 600;
    color: var(--primary);
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
}

#alert-container {
    padding: 0 30px;
}

.alert-box {
    padding: 15px 20px;
    border-radius: 8px;
    margin: 20px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success { background: rgba(16, 185, 129, 0.15); color: var(--success); border: 1px solid var(--success); }
.alert-error { background: rgba(239, 68, 68, 0.15); color: var(--danger); border: 1px solid var(--danger); }
.alert-info { background: rgba(59, 130, 246, 0.15); color: var(--info); border: 1px solid var(--info); }

.admin-section {
    display: none;
    padding: 30px;
    flex: 1;
}

.admin-section.active {
    display: block;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    border: 1px solid rgba(0, 255, 255, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 255, 255, 0.15);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 255, 255, 0.1);
    color: var(--primary);
    font-size: 1.5em;
}

.stat-icon.success { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.stat-icon.warning { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.stat-icon.info { background: rgba(59, 130, 246, 0.15); color: var(--info); }

.stat-value {
    font-size: 2em;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9em;
    margin-top: 4px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    flex-wrap: wrap;
    gap: 15px;
}

.section-header h2 {
    color: var(--text-primary);
    font-size: 1.3em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-header h2 i {
    color: var(--primary);
}

.sub-title {
    color: var(--text-primary);
    font-size: 1.1em;
    margin: 30px 0 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(0, 255, 255, 0.1);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: none;
    color: var(--bg-dark);
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 255, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--text-secondary);
    color: var(--text-secondary);
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

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

.filters-bar {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    padding: 15px 20px;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid rgba(0, 255, 255, 0.1);
    flex-wrap: wrap;
    align-items: center;
}

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

.filter-group label {
    font-size: 0.85em;
    color: var(--text-secondary);
    font-weight: 500;
}

.filter-select {
    background: var(--bg-dark);
    border: 1px solid rgba(0, 255, 255, 0.2);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9em;
    cursor: pointer;
    min-width: 120px;
    transition: border-color 0.3s;
}

.filter-select:hover,
.filter-select:focus {
    border-color: var(--primary);
    outline: none;
}

.filter-select option {
    background: var(--bg-dark);
    color: var(--text-primary);
}

.table-container {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(0, 255, 255, 0.1);
}

.table-container table {
    width: 100%;
    border-collapse: collapse;
}

.table-container th {
    background: rgba(0, 255, 255, 0.05);
    color: var(--primary);
    padding: 15px 12px;
    text-align: left;
    font-size: 0.8em;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    border-bottom: 1px solid rgba(0, 255, 255, 0.1);
}

.table-container td {
    padding: 14px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.9em;
    color: var(--text-primary);
}

.table-container tr:hover td {
    background: rgba(0, 255, 255, 0.03);
}

.table-container .loading {
    text-align: center;
    color: var(--primary);
    padding: 40px;
}

.table-container .loading i {
    margin-right: 10px;
}

.badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.75em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.badge-warning { background: rgba(245, 158, 11, 0.2); color: var(--warning); }
.badge-danger { background: rgba(239, 68, 68, 0.2); color: var(--danger); }
.badge-info { background: rgba(59, 130, 246, 0.2); color: var(--info); }
.badge-secondary { background: rgba(136, 146, 176, 0.2); color: var(--text-secondary); }

.btn-action {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8em;
    margin: 2px;
    transition: all 0.3s;
}

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

.btn-action.btn-danger {
    border-color: var(--danger);
    color: var(--danger);
}

.btn-action.btn-danger:hover {
    background: var(--danger);
    color: white;
}

.backups-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.backup-item {
    background: var(--bg-card);
    border: 1px solid rgba(0, 255, 255, 0.1);
    border-radius: 10px;
    padding: 18px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: border-color 0.3s;
}

.backup-item:hover {
    border-color: var(--primary);
}

.backup-info h4 {
    color: var(--text-primary);
    margin-bottom: 5px;
}

.backup-info span {
    color: var(--text-secondary);
    font-size: 0.85em;
}

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

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--primary);
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 255, 255, 0.2);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    border-bottom: 1px solid rgba(0, 255, 255, 0.1);
}

.modal-header h3 {
    color: var(--primary);
    font-size: 1.2em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 28px;
    cursor: pointer;
    transition: color 0.3s;
    line-height: 1;
}

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

.modal-body {
    padding: 25px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px 25px;
    border-top: 1px solid rgba(0, 255, 255, 0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-size: 0.9em;
}

.form-group small {
    display: block;
    color: var(--text-secondary);
    font-size: 0.8em;
    margin-top: 6px;
    opacity: 0.8;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1em;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

.form-control.readonly {
    background: rgba(0, 0, 0, 0.5);
    color: var(--text-secondary);
}

.form-control option {
    background: var(--bg-dark);
    color: var(--text-primary);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
    cursor: pointer;
}

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .sidebar-toggle {
        display: none;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    .table-container table {
        min-width: 800px;
    }
    
    .top-header {
        padding: 15px 20px;
    }
    
    .admin-section {
        padding: 20px;
    }
}