/* BetterRoofing Shared Components
   Structural/layout patterns shared across pages.
   Uses CSS variables from theme.css for colors.
   ================================================================= */

/* =================================================================
   Utility
   ================================================================= */
.initially-hidden { display: none; }

/* =================================================================
   Layout
   ================================================================= */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
}

.container-narrow {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 24px;
}

.container-wide {
    max-width: 1600px;
    margin: 0 auto;
    padding: 24px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

/* =================================================================
   Buttons
   ================================================================= */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    font-family: inherit;
    text-decoration: none;
    line-height: 1.4;
}

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

.btn:hover:not(:disabled) {
    transform: translateY(-1px);
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--btn-primary-hover);
    box-shadow: 0 2px 8px rgba(0, 120, 212, 0.3);
}

.btn-secondary {
    background-color: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
    border: 1px solid var(--border-medium);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--btn-secondary-hover);
}

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

.btn-danger:hover:not(:disabled) {
    background-color: var(--btn-danger-hover);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-icon {
    padding: 8px;
    min-width: 36px;
    min-height: 36px;
}

/* =================================================================
   Modals
   ================================================================= */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--overlay-bg);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.modal-overlay.active,
.modal-overlay.open {
    display: flex;
}

.modal-content {
    background: var(--modal-bg);
    border-radius: 12px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow: auto;
    box-shadow: var(--shadow-xl);
}

.modal-content-lg {
    max-width: 800px;
}

.modal-content-sm {
    max-width: 420px;
}

.modal-header {
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2,
.modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-body {
    padding: 20px 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-tertiary);
    padding: 4px;
    line-height: 1;
}

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

/* =================================================================
   Forms
   ================================================================= */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.form-label .required-star {
    color: var(--btn-danger-bg);
}

.form-input,
.form-select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    font-size: 14px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-family: inherit;
}

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

.form-input:disabled,
.form-select:disabled {
    background-color: var(--input-disabled-bg);
    color: var(--input-disabled-text);
}

.form-row {
    display: flex;
    gap: 16px;
}

.form-row .form-group {
    flex: 1;
}

/* =================================================================
   Stat Cards
   ================================================================= */
.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat-card-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-card-label {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

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

/* =================================================================
   Badges
   ================================================================= */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    line-height: 1.4;
}

.badge-success { background: #d4edda; color: #155724; }
.badge-warning { background: #fff3cd; color: #856404; }
.badge-danger  { background: #f8d7da; color: #721c24; }
.badge-info    { background: #d1ecf1; color: #0c5460; }
.badge-neutral { background: var(--bg-hover); color: var(--text-secondary); }

[data-theme="dark"] .badge-success { background: #1f3a2a; color: #7bc4a4; }
[data-theme="dark"] .badge-warning { background: #3a3020; color: #d4a574; }
[data-theme="dark"] .badge-danger  { background: #3a1f1f; color: #d49a9a; }
[data-theme="dark"] .badge-info    { background: #1f3a3a; color: #74c4d4; }

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

.data-table thead th {
    background: var(--bg-tertiary);
    padding: 12px 16px;
    text-align: left;
    font-size: 12px;
    color: var(--text-tertiary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-light);
    -webkit-user-select: none;
    user-select: none;
}

.data-table thead th.sortable {
    cursor: pointer;
}

.data-table thead th.sortable:hover {
    background: var(--bg-hover);
}

.data-table thead th.sortable::after {
    content: '\21C5';
    margin-left: 8px;
    color: var(--border-medium);
    font-size: 14px;
}

.data-table thead th.sorted-asc::after {
    content: '\2191';
    color: var(--brand-blue);
}

.data-table thead th.sorted-desc::after {
    content: '\2193';
    color: var(--brand-blue);
}

.data-table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    font-size: 14px;
    color: var(--text-primary);
}

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

/* =================================================================
   Empty State
   ================================================================= */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-tertiary);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.empty-state-text {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.empty-state-subtext {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

/* =================================================================
   Loading
   ================================================================= */

/* Inline spinner — use inside cards/panels/tables */
.loading-spinner,
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light);
    border-top-color: var(--brand-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 12px;
}

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

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-tertiary);
}

/* Full-page overlay — add <div class="page-loading-overlay" id="page-loading"> to body,
   then call document.getElementById('page-loading').remove() once content is ready */
.page-loading-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-primary, #fff);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    z-index: 9999;
    color: var(--text-secondary);
    font-size: 14px;
    transition: opacity 0.25s ease;
}
.page-loading-overlay.fade-out {
    opacity: 0;
    pointer-events: none;
}

/* =================================================================
   Cards
   ================================================================= */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-light);
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 20px;
}

/* =================================================================
   Content Header (filter bars, action bars)
   ================================================================= */
.content-header {
    background: var(--bg-secondary);
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

/* =================================================================
   Tabs
   ================================================================= */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border-light);
    margin-bottom: 24px;
}

.tab {
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-tertiary);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}

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

.tab.active {
    color: var(--brand-blue);
    border-bottom-color: var(--brand-blue);
    font-weight: 600;
}

/* =================================================================
   Mobile Responsive (shared breakpoints)
   ================================================================= */
@media (max-width: 768px) {
    .container,
    .container-wide {
        padding: 16px;
    }

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

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .stat-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .modal-content {
        margin: 8px;
        max-height: calc(100vh - 16px);
    }

    .modal-header {
        padding: 16px;
    }

    .modal-body {
        padding: 16px;
    }

    .modal-footer {
        padding: 12px 16px;
        flex-direction: column;
        gap: 8px;
    }

    .modal-footer .btn {
        width: 100%;
    }

    .data-table thead th,
    .data-table tbody td {
        padding: 10px 12px;
    }

    .btn {
        padding: 10px 16px;
    }
}

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