/* =============================================================================
   Shared Component Styles
   
   Common CSS patterns used across page components. Import via ::deep or
   reference in component CSS files to reduce duplication.
   
   Blazor CSS isolation scopes styles to their component, so these shared
   styles must be applied at the app level (wwwroot/css/) to work globally.
   ============================================================================= */

/* =============================================================================
   CSS Custom Properties (Design Tokens)
   ============================================================================= */
:root {
    /* Brand Colors */
    --color-primary: #1b4a98;
    --color-primary-hover: #153a7a;
    --color-primary-light: rgba(27, 74, 152, 0.1);

    /* Semantic Colors */
    --color-success: #28a745;
    --color-success-bg: #d4edda;
    --color-success-text: #155724;
    --color-success-hover-bg: #f0fff4;

    --color-danger: #dc3545;
    --color-danger-bg: #f8d7da;
    --color-danger-text: #721c24;
    --color-danger-hover-bg: #fff5f5;

    --color-warning-bg: #fff3cd;
    --color-warning-text: #856404;

    --color-info-bg: #cce5ff;
    --color-info-text: #004085;
    --color-info-bg-alt: #d1ecf1;
    --color-info-text-alt: #0c5460;

    /* Neutrals */
    --color-text: #333;
    --color-text-secondary: #6c757d;
    --color-text-muted: #495057;
    --color-border: #dee2e6;
    --color-border-light: #e9ecef;
    --color-bg: #f8f9fa;
    --color-bg-white: #fff;

    /* Spacing */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 20px;

    /* Shadows */
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-size-xs: 0.7rem;
    --font-size-sm: 0.75rem;
    --font-size-base: 0.875rem;
    --font-size-md: 0.9rem;
    --font-size-lg: 1rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.75rem;
}

/* =============================================================================
   Page Header
   ============================================================================= */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header-left {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.page-header h1 {
    margin: 0;
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text);
}

.page-subtitle {
    margin: 0.25rem 0 0 0;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.page-header-right {
    display: flex;
    gap: 0.75rem;
}

/* Breadcrumb */
.breadcrumb-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.25rem;
}

.breadcrumb-row > .breadcrumb {
    margin-bottom: 0;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: 0.25rem;
}

.breadcrumb a {
    color: var(--color-primary);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb .separator {
    color: var(--color-border);
}

/* Back Link */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-base);
    transition: color 0.15s ease;
}

.back-link:hover {
    color: var(--color-primary);
}

/* =============================================================================
   Buttons
   ============================================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
    line-height: 1.4;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

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

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

.btn-primary:disabled {
    background-color: var(--color-text-secondary);
    cursor: not-allowed;
}

.btn-secondary {
    background-color: var(--color-border-light);
    color: var(--color-text-muted);
}

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

.btn-outline {
    background-color: var(--color-bg-white);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

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

.btn-danger-outline {
    background-color: var(--color-bg-white);
    color: var(--color-danger);
    border: 1px solid var(--color-danger);
}

.btn-danger-outline:hover {
    background-color: var(--color-danger-hover-bg);
    color: #c82333;
}

.btn-success-outline {
    background-color: var(--color-bg-white);
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.btn-success-outline:hover {
    background-color: var(--color-success-hover-bg);
    color: #1e7e34;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    background: none;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
}

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

.btn-icon-danger:hover {
    background-color: var(--color-danger-hover-bg);
    color: var(--color-danger);
}

/* =============================================================================
   Badges
   ============================================================================= */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-pill);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.badge-success {
    background-color: var(--color-success-bg);
    color: var(--color-success-text);
}

.badge-danger {
    background-color: var(--color-danger-bg);
    color: var(--color-danger-text);
}

.badge-warning {
    background-color: var(--color-warning-bg);
    color: var(--color-warning-text);
}

.badge-info {
    background-color: var(--color-info-bg);
    color: var(--color-info-text);
}

.badge-secondary {
    background-color: var(--color-border-light);
    color: var(--color-text-muted);
}

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

/* =============================================================================
   Form Controls
   ============================================================================= */
.form-control,
.form-select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: var(--font-size-base);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-bg-white);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: #555;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.form-hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.textarea {
    resize: vertical;
    min-height: 100px;
}

/* Input Group (prefix/suffix) */
.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-prefix {
    position: absolute;
    left: 0.875rem;
    color: var(--color-text-secondary);
    font-size: var(--font-size-md);
}

.form-control.has-prefix {
    padding-left: 1.75rem;
}

/* Toggle Group */
.toggle-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.toggle input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.toggle-label {
    font-size: var(--font-size-md);
    color: var(--color-text);
}

.validation-message {
    color: var(--color-danger);
    font-size: var(--font-size-sm);
}

/* =============================================================================
   Filter Bar
   ============================================================================= */
.filter-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    background: var(--color-bg-white);
    padding: 1rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.filter-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-group.search-group {
    flex: 1;
    min-width: 200px;
}

.search-input-wrapper {
    position: relative;
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-secondary);
}

.search-input {
    padding-left: 2.5rem !important;
}

.filter-group .form-control,
.filter-group .form-select {
    min-width: 150px;
}

/* =============================================================================
   Data Table
   ============================================================================= */
.table-container {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

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

.data-table th {
    background-color: var(--color-bg);
    padding: 0.875rem 1rem;
    text-align: left;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--color-border-light);
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--color-border-light);
    font-size: var(--font-size-md);
    color: var(--color-text);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.clickable-row {
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.clickable-row:hover {
    background-color: var(--color-bg);
}

.sortable {
    cursor: pointer;
    user-select: none;
}

.sortable:hover {
    color: var(--color-primary);
}

.sort-indicator {
    display: inline-block;
    vertical-align: middle;
    margin-left: 4px;
    opacity: 0.6;
}

/* =============================================================================
   Pagination
   ============================================================================= */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
    padding: 1rem;
}

.btn-page {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-base);
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-page:hover:not(:disabled) {
    background-color: var(--color-bg);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-page:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-info {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

/* =============================================================================
   Cards & Sections
   ============================================================================= */
.card,
.detail-section,
.form-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.card-header,
.section-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border-light);
}

.card-header h2,
.section-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
}

.card-header svg,
.section-header svg {
    color: var(--color-primary);
}

.card-body {
    padding: 1.5rem;
}

.section-link {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: color 0.15s ease;
}

.section-link:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

/* Detail Grid (view pages) */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.25rem;
    padding: 1.5rem;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.detail-item.full-width {
    grid-column: 1 / -1;
}

.detail-item label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-item span {
    font-size: var(--font-size-md);
    color: var(--color-text);
}

.text-block {
    font-size: var(--font-size-md);
    color: var(--color-text);
    white-space: pre-wrap;
    line-height: 1.6;
}

/* Form Section (edit pages) */
.form-container {
    max-width: 900px;
}

.form-section {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-card);
}

.form-section h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0 0 1.25rem 0;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border-light);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
}

.form-section h2 svg {
    color: var(--color-primary);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1.5rem 0;
}

/* Form Layout (two-column with sidebar) */
.form-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 1.5rem;
    align-items: start;
}

.form-main {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: sticky;
    top: 1rem;
}

/* =============================================================================
   Profile / View Layout
   ============================================================================= */
.profile-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    align-items: start;
}

.profile-sidebar {
    position: sticky;
    top: 1rem;
}

.profile-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 1.5rem;
    text-align: center;
}

.profile-avatar {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, #2d6fd6 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin: 0 auto 1rem;
}

.profile-card h2 {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
}

.profile-status {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    margin-top: 0.75rem;
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-pill);
    font-size: 0.8rem;
    font-weight: 500;
}

.profile-status.active {
    background-color: var(--color-success-bg);
    color: var(--color-success-text);
}

.profile-status.inactive {
    background-color: var(--color-danger-bg);
    color: var(--color-danger-text);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: currentColor;
}

.profile-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.profile-actions {
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-border-light);
}

.profile-actions .btn {
    width: 100%;
}

.profile-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* =============================================================================
   Modal / Dialog
   ============================================================================= */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    z-index: 1001;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-border-light);
}

.modal-header h3 {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--color-border-light);
}

.btn-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.btn-close:hover {
    color: var(--color-text);
}

/* =============================================================================
   Loading, Empty & Error States
   ============================================================================= */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    gap: 1rem;
    color: var(--color-text-secondary);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-border-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-small,
.spinner-sm {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    text-align: center;
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

.empty-state svg {
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
}

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

.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    text-align: center;
}

.error-state h2 {
    margin: 0 0 0.5rem;
    color: var(--color-text);
}

.error-state p {
    margin: 0 0 1.5rem;
    color: var(--color-text-secondary);
}

/* =============================================================================
   Utility Classes
   ============================================================================= */
.text-muted {
    color: var(--color-text-secondary);
}

/* =============================================================================
   Responsive Breakpoints
   ============================================================================= */
@media (max-width: 992px) {
    .profile-layout {
        grid-template-columns: 1fr;
    }

    .profile-sidebar {
        position: static;
    }

    .form-layout {
        grid-template-columns: 1fr;
    }

    .form-sidebar {
        position: static;
    }

    .data-table {
        display: block;
        overflow-x: auto;
    }
}

@media (max-width: 768px) {
    .page-header {
        flex-direction: column;
    }

    .page-header-right {
        flex-wrap: wrap;
    }

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

    .filter-group {
        width: 100%;
    }

    .filter-group .form-control,
    .filter-group .form-select {
        width: 100%;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .form-actions {
        flex-direction: column-reverse;
    }

    .form-actions .btn {
        width: 100%;
    }

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

    .modal {
        width: 95%;
    }
}