/* CSS Variables for Theme Support */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    
    --border-color: #dee2e6;
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-xl: 1rem;
    
    --transition: all 0.15s ease-in-out;
}

/* Dark Theme */
[data-bs-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3d3d3d;
    --text-primary: #ffffff;
    --text-secondary: #adb5bd;
    --text-muted: #6c757d;
    
    --border-color: #495057;
}

/* Base Styles */
body {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
}

/* Sidebar Layout */
.sidebar {
    min-height: 100vh;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.sidebar-header i {
    font-size: 1.25rem;
}

.sidebar-title {
    font-size: 1.1rem;
    font-weight: 700;
    text-align: center;
}

.sidebar-nav .nav-link {
    color: var(--text-primary);
    border-radius: var(--border-radius);
    margin: 0.125rem 0;
    font-weight: 500;
}

.sidebar-nav .nav-link:hover,
.sidebar-nav .nav-link.active {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-nav .nav-link i {
    width: 1.25rem;
}

.sidebar hr {
    border-color: var(--border-color);
    margin: 1.25rem 0;
}

.main-content {
    padding: 1rem;
}

@media (min-width: 768px) {
    .main-content {
        padding: 2rem 2.5rem;
    }
}

@media (max-width: 767.98px) {
    .sidebar {
        min-height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        margin-bottom: 1.5rem;
    }
}

/* Cards */
.card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    background-color: var(--bg-primary);
}

.card-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

/* Stats Cards */
.card.bg-primary,
.card.bg-success,
.card.bg-warning,
.card.bg-danger {
    background: linear-gradient(135deg, var(--primary-color), rgba(13, 110, 253, 0.8)) !important;
    border: none;
    box-shadow: var(--shadow);
}

.card.bg-success {
    background: linear-gradient(135deg, var(--success-color), rgba(25, 135, 84, 0.8)) !important;
}

.card.bg-warning {
    background: linear-gradient(135deg, var(--warning-color), rgba(255, 193, 7, 0.8)) !important;
}

.card.bg-danger {
    background: linear-gradient(135deg, var(--danger-color), rgba(220, 53, 69, 0.8)) !important;
}

/* Tables */
.table {
    color: var(--text-primary);
}

.table-hover tbody tr:hover {
    background-color: var(--bg-tertiary);
    transition: var(--transition);
}

.table th {
    border-bottom: 2px solid var(--border-color);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

/* Status Badges */
.status-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.375rem 0.75rem;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    white-space: nowrap;
}

.status-available {
    background-color: rgba(25, 135, 84, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(25, 135, 84, 0.2);
}

.status-unavailable {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(220, 53, 69, 0.2);
}

.status-unknown {
    background-color: rgba(108, 117, 125, 0.1);
    color: var(--secondary-color);
    border: 1px solid rgba(108, 117, 125, 0.2);
}

/* SSL Status */
.ssl-status {
    display: inline-block;
    line-height: 1.2;
}

.ssl-status small {
    display: block;
    margin-top: 0.15rem;
}

.ssl-valid {
    color: var(--success-color);
    font-weight: 600;
}

.ssl-invalid {
    color: var(--danger-color);
    font-weight: 600;
}

.ssl-unknown {
    color: var(--secondary-color);
    font-weight: 600;
}

/* Buttons */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    border: none;
}

.btn:hover {
    box-shadow: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #146c43);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #b02a37);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #e0a800);
}

/* Form Controls */
.form-control,
.form-select {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

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

/* Pagination */
.pagination .page-link {
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.pagination .page-link:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--primary-color);
}

.pagination .page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

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

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container-fluid {
        padding: 1rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .btn-group .btn {
        margin-bottom: 0.25rem;
    }
}

/* Chart Containers */
.chart-container {
    position: relative;
    height: 300px;
    margin: 1rem 0;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Toast Styles */
.toast {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.toast-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

/* Domain Name Styling */
.domain-name {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-weight: 600;
    color: var(--primary-color);
}

/* Expiration Warning */
.expiration-warning {
    color: var(--warning-color);
    font-weight: 600;
}

.expiration-danger {
    color: var(--danger-color);
    font-weight: 600;
}

/* Highlight expiring rows */
tr.row-expiring-warning {
    background-color: rgba(255, 193, 7, 0.15);
}

.table-hover tbody tr.row-expiring-warning:hover {
    background-color: rgba(255, 193, 7, 0.25);
}

/* Action Buttons */
.action-btn {
    padding: 0.25rem 0.5rem;
    margin: 0 0.125rem;
    border-radius: var(--border-radius);
}

/* Progress Bars */
.progress {
    height: 0.5rem;
    border-radius: var(--border-radius);
    background-color: var(--bg-tertiary);
}

.progress-bar {
    border-radius: var(--border-radius);
    transition: width 0.6s ease;
}

/* Tooltips */
.tooltip {
    font-size: 0.875rem;
}

/* Dropdown Menus */
.dropdown-menu {
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    background-color: var(--bg-primary);
}

.dropdown-item {
    color: var(--text-primary);
    transition: var(--transition);
}

.dropdown-item:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Modal Styles */
.modal-content {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--info-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-custom {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.border-gradient {
    border: 2px solid;
    border-image: linear-gradient(135deg, var(--primary-color), var(--info-color)) 1;
}

/* Print Styles */
@media print {
    .navbar,
    .btn,
    .pagination,
    .loading-overlay {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .table {
        font-size: 12px;
    }
}