/* Variables - Light Theme (default) */
:root {
    --primary-color: #0d6efd;
    --primary-dark: #0a58ca;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --sidebar-width: 250px;
    --sidebar-bg: #1a1a2e;
    --sidebar-text: #a0a0a0;
    --sidebar-active: #0d6efd;
    --topbar-height: 60px;

    /* Theme-specific */
    --body-bg: #f5f7fa;
    --text-color: #212529;
    --text-muted: #6c757d;
    --card-bg: #ffffff;
    --card-border: #e8e8e8;
    --topbar-bg: #ffffff;
    --topbar-border: #e0e0e0;
    --input-bg: #ffffff;
    --input-border: #d1d5db;
    --table-hover: #f8f9fa;
    --table-border: #e8e8e8;
    --badge-success-bg: #d1fae5;
    --badge-success-text: #065f46;
    --badge-warning-bg: #fef3c7;
    --badge-warning-text: #92400e;
    --badge-danger-bg: #fee2e2;
    --badge-danger-text: #991b1b;
    --badge-info-bg: #dbeafe;
    --badge-info-text: #1e40af;
    --badge-secondary-bg: #e5e7eb;
    --badge-secondary-text: #374151;
    --badge-primary-bg: #dbeafe;
    --badge-primary-text: #1d4ed8;
    --btn-secondary-bg: #e5e7eb;
    --btn-secondary-text: #212529;
    --modal-overlay: rgba(0,0,0,0.5);
}

/* Dark Theme */
[data-theme="dark"] {
    --body-bg: #0f1117;
    --text-color: #e1e4e8;
    --text-muted: #8b949e;
    --card-bg: #161b22;
    --card-border: #30363d;
    --topbar-bg: #161b22;
    --topbar-border: #30363d;
    --input-bg: #0d1117;
    --input-border: #30363d;
    --table-hover: #1c2128;
    --table-border: #30363d;
    --sidebar-bg: #0d1117;
    --badge-success-bg: #0d2818;
    --badge-success-text: #3fb950;
    --badge-warning-bg: #2d1f00;
    --badge-warning-text: #d29922;
    --badge-danger-bg: #2d0a0a;
    --badge-danger-text: #f85149;
    --badge-info-bg: #0c2d4a;
    --badge-info-text: #58a6ff;
    --badge-secondary-bg: #21262d;
    --badge-secondary-text: #8b949e;
    --badge-primary-bg: #0c2d4a;
    --badge-primary-text: #58a6ff;
    --btn-secondary-bg: #21262d;
    --btn-secondary-text: #c9d1d9;
    --dark-color: #e1e4e8;
    --modal-overlay: rgba(0,0,0,0.7);
}

/* Reset and Base */
*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    background-color: var(--body-bg);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

/* Page Layout */
.page {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: width 0.25s ease;
    overflow-x: hidden;
}

main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left 0.25s ease;
}

/* Sidebar collapsed state */
.sidebar-collapsed .sidebar {
    width: 70px;
}

.sidebar-collapsed main {
    margin-left: 70px;
}

.sidebar-collapsed .nav-brand {
    justify-content: center;
    padding: 1rem 0.5rem;
}

.sidebar-collapsed .brand-icon {
    margin-right: 0;
}

.sidebar-collapsed .nav-links {
    padding: 0 0.5rem;
}

.sidebar-collapsed .nav-link {
    justify-content: center;
    padding: 0.75rem 0.5rem;
}

.sidebar-collapsed .nav-icon {
    margin-right: 0;
}

.sidebar-collapsed .nav-footer {
    padding: 1rem 0.5rem;
    text-align: center;
}

.sidebar-collapsed .user-info {
    justify-content: center;
}

.sidebar-collapsed .user-icon {
    margin-right: 0;
}

.top-row {
    height: var(--topbar-height);
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--topbar-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

.app-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
}

.content {
    padding: 1.5rem;
    flex: 1;
}

/* NavMenu */
.nav-menu {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 1rem 0;
}

.nav-brand {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.1rem;
    margin-right: 0.75rem;
}

.brand-text {
    color: white;
    font-size: 1.25rem;
    font-weight: 600;
}

.nav-links {
    flex: 1;
    padding: 0 0.75rem;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 0.25rem;
    transition: all 0.2s;
}

.nav-link:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.nav-link.active {
    background: var(--sidebar-active);
    color: white;
}

.nav-icon {
    width: 32px;
    height: 32px;
    background: rgba(255,255,255,0.1);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.75rem;
    font-weight: 600;
}

.nav-link.active .nav-icon {
    background: rgba(255,255,255,0.2);
}

.nav-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.version {
    color: var(--sidebar-text);
    font-size: 0.8rem;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    border: 1px solid var(--card-border);
    margin-bottom: 1.5rem;
}

.card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--card-border);
    font-weight: 600;
    background: transparent;
}

.card-body {
    padding: 1.5rem;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    border: 1px solid var(--card-border);
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1;
}

.stat-card .stat-label {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.stat-card.primary { border-left: 4px solid var(--primary-color); }
.stat-card.success { border-left: 4px solid var(--success-color); }
.stat-card.warning { border-left: 4px solid var(--warning-color); }
.stat-card.danger { border-left: 4px solid var(--danger-color); }
.stat-card.info { border-left: 4px solid var(--info-color); }

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

.table th {
    text-align: left;
    padding: 0.75rem 1rem;
    border-bottom: 2px solid var(--table-border);
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--table-border);
}

.table tr:hover {
    background: var(--table-hover);
}

/* Badges */
.badge {
    padding: 0.35rem 0.65rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
}

.badge.bg-success { background: var(--badge-success-bg); color: var(--badge-success-text); }
.badge.bg-warning { background: var(--badge-warning-bg); color: var(--badge-warning-text); }
.badge.bg-danger { background: var(--badge-danger-bg); color: var(--badge-danger-text); }
.badge.bg-info { background: var(--badge-info-bg); color: var(--badge-info-text); }
.badge.bg-secondary { background: var(--badge-secondary-bg); color: var(--badge-secondary-text); }
.badge.bg-primary { background: var(--badge-primary-bg); color: var(--badge-primary-text); }

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    font-size: 0.875rem;
}

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

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

.btn-secondary {
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
}

.btn-secondary:hover {
    background: var(--btn-secondary-bg);
    filter: brightness(0.9);
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-success:hover {
    background: #157347;
}

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

.btn-danger:hover {
    background: #bb2d3b;
}

.btn-warning {
    background: var(--warning-color);
    color: #212529;
}

.btn-warning:hover {
    background: #ffca2c;
}

.btn-info {
    background: var(--info-color);
    color: #212529;
}

.btn-info:hover {
    background: #31d2f2;
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    font-size: 0.875rem;
    background: var(--input-bg);
    color: var(--text-color);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}

.form-select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    font-size: 0.875rem;
    background: var(--input-bg);
    color: var(--text-color);
}

/* Page Headers */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

/* Loading */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: var(--text-muted);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--card-border);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 1rem;
}

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.empty-state h3 {
    margin: 0 0 0.5rem;
    color: var(--text-color);
}

/* Status Colors */
.status-pending { color: var(--badge-warning-text); }
.status-approved { color: var(--badge-primary-text); }
.status-completed { color: var(--badge-success-text); }
.status-failed { color: var(--badge-danger-text); }
.status-cancelled { color: var(--badge-secondary-text); }

/* Health Status */
.health-healthy { color: var(--badge-success-text); }
.health-unhealthy { color: var(--badge-danger-text); }
.health-degraded { color: var(--badge-warning-text); }
.health-unknown { color: var(--badge-secondary-text); }

/* Transitions */
.card, .stat-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.3s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

.btn {
    transition: all 0.2s ease;
}

.btn:active:not(:disabled) {
    transform: scale(0.97);
}

.badge {
    transition: background-color 0.3s, color 0.3s;
}

.nav-link {
    transition: all 0.2s ease;
}

/* Fade-in animation for page content */
.content {
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Modal/Overlay */
.modal-overlay {
    background: var(--modal-overlay);
    backdrop-filter: blur(4px);
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Pagination improvements */
.pagination {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.pagination button {
    transition: all 0.2s ease;
}

/* Filter bar */
.filter-bar {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: end;
    margin-bottom: 1.5rem;
}

.filter-bar .form-group {
    margin-bottom: 0;
    min-width: 180px;
}

/* Error UI */
#blazor-error-ui {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem;
    background: var(--badge-danger-bg);
    color: var(--badge-danger-text);
    text-align: center;
    z-index: 1000;
}

/* Validation */
.valid.modified:not([type=checkbox]) {
    outline: 1px solid var(--success-color);
}

.invalid {
    outline: 1px solid var(--danger-color);
}

.validation-message {
    color: var(--danger-color);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

/* Focus visible for accessibility */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 70px;
    }

    .brand-text, .nav-text {
        display: none;
    }

    main {
        margin-left: 70px;
    }

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

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .filter-bar {
        flex-direction: column;
    }

    .filter-bar .form-group {
        min-width: 100%;
    }

    .table {
        font-size: 0.8rem;
    }

    .table th, .table td {
        padding: 0.5rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .content {
        padding: 1rem;
    }

    .top-row {
        padding: 0 1rem;
    }
}