/**
 * Solar Product Table - Frontend Styles
 *
 * @package SolarProductTable
 * Mobile-first responsive design with CSS variables.
 */

/* ==========================================
   CSS Variables
   ========================================== */
.spt-wrapper {
    --spt-color: #0073aa;
    --spt-color-light: color-mix(in srgb, var(--spt-color) 10%, transparent);
    --spt-color-hover: color-mix(in srgb, var(--spt-color) 80%, #000);
    --spt-radius: 8px;
    --spt-font-size: 14px;
    --spt-text: #1d2327;
    --spt-text-light: #646970;
    --spt-bg: #ffffff;
    --spt-bg-alt: #f9f9f9;
    --spt-border: #dcdcde;
    --spt-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --spt-shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1);

    font-size: var(--spt-font-size);
    line-height: 1.6;
    color: var(--spt-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    .spt-wrapper {
        --spt-text: #e0e0e0;
        --spt-text-light: #a0a0a0;
        --spt-bg: #1e1e1e;
        --spt-bg-alt: #2a2a2a;
        --spt-border: #444;
    }
}

/* ==========================================
   Toolbar
   ========================================== */
.spt-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--spt-bg);
    border: 1px solid var(--spt-border);
    border-radius: var(--spt-radius);
    box-shadow: var(--spt-shadow);
}

.spt-search-box {
    position: relative;
    flex: 1;
    min-width: 200px;
    max-width: 350px;
}

.spt-search-input {
    width: 100%;
    padding: 10px 14px 10px 40px;
    border: 1px solid var(--spt-border);
    border-radius: var(--spt-radius);
    font-size: var(--spt-font-size);
    background: var(--spt-bg);
    color: var(--spt-text);
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
    box-sizing: border-box;
}

.spt-search-input:focus {
    border-color: var(--spt-color);
    box-shadow: 0 0 0 2px var(--spt-color-light);
}

.spt-search-input::placeholder {
    color: var(--spt-text-light);
}

.spt-search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--spt-text-light);
    pointer-events: none;
}

.spt-toolbar-right {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.spt-filter-group select,
.spt-per-page-select {
    padding: 10px 12px;
    border: 1px solid var(--spt-border);
    border-radius: var(--spt-radius);
    font-size: var(--spt-font-size);
    background: var(--spt-bg);
    color: var(--spt-text);
    cursor: pointer;
    outline: none;
    min-width: 120px;
}

.spt-filter-group select:focus,
.spt-per-page-select:focus {
    border-color: var(--spt-color);
    box-shadow: 0 0 0 2px var(--spt-color-light);
}

/* Buttons */
.spt-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 14px;
    border: 1px solid var(--spt-border);
    border-radius: var(--spt-radius);
    font-size: 13px;
    font-weight: 500;
    background: var(--spt-bg);
    color: var(--spt-text);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    text-decoration: none;
}

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

.spt-btn:focus-visible {
    outline: 2px solid var(--spt-color);
    outline-offset: 2px;
}

.spt-btn svg {
    flex-shrink: 0;
}

.spt-export-group,
.spt-print-group {
    display: inline-flex;
}

/* ==========================================
   Table
   ========================================== */
.spt-table-container {
    position: relative;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.spt-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--spt-bg);
    border: 1px solid var(--spt-border);
    border-radius: var(--spt-radius);
    overflow: hidden;
    box-shadow: var(--spt-shadow);
}

/* Sticky Header */
.spt-table thead {
    position: sticky;
    top: 0;
    z-index: 10;
}

.spt-table thead th {
    background: var(--spt-color);
    color: #ffffff;
    padding: 14px 16px;
    font-weight: 600;
    font-size: 13px;
    text-align: left;
    white-space: nowrap;
    border-bottom: 2px solid var(--spt-color-hover);
    user-select: none;
    cursor: pointer;
    transition: background 0.2s;
}

.spt-table thead th:hover {
    background: var(--spt-color-hover);
}

.spt-table thead th[aria-sort]::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 6px;
    vertical-align: middle;
}

.spt-table thead th[aria-sort="ascending"]::after {
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-bottom: 5px solid currentColor;
}

.spt-table thead th[aria-sort="descending"]::after {
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
}

/* Table Body */
.spt-table tbody tr {
    transition: background 0.15s;
}

.spt-table tbody tr:nth-child(even) {
    background: var(--spt-bg-alt);
}

.spt-table tbody tr:hover {
    background: var(--spt-color-light);
}

.spt-table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--spt-border);
    vertical-align: middle;
}

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

.spt-table .spt-cell-module strong {
    color: var(--spt-text);
    font-weight: 600;
}

.spt-table .spt-cell-desc {
    color: var(--spt-text-light);
    font-size: 12px;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Focus visible for keyboard navigation */
.spt-table tbody tr:focus-visible {
    outline: 2px solid var(--spt-color);
    outline-offset: -2px;
}

/* No Results */
.spt-no-results-row td {
    text-align: center;
    padding: 40px 20px;
    color: var(--spt-text-light);
    font-style: italic;
}

/* ==========================================
   Loading Animation
   ========================================== */
.spt-loading {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    z-index: 20;
    align-items: center;
    justify-content: center;
}

.spt-loading.active {
    display: flex;
}

.spt-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--spt-border);
    border-top-color: var(--spt-color);
    border-radius: 50%;
    animation: sptSpin 0.8s linear infinite;
}

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

/* ==========================================
   Pagination
   ========================================== */
.spt-pagination {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--spt-bg);
    border: 1px solid var(--spt-border);
    border-radius: var(--spt-radius);
    font-size: 13px;
}

.spt-per-page {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--spt-text-light);
}

.spt-page-info {
    color: var(--spt-text-light);
}

.spt-page-buttons {
    display: flex;
    gap: 4px;
}

.spt-page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border: 1px solid var(--spt-border);
    border-radius: var(--spt-radius);
    background: var(--spt-bg);
    color: var(--spt-text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.spt-page-btn:hover:not(:disabled):not(.active) {
    border-color: var(--spt-color);
    color: var(--spt-color);
    background: var(--spt-color-light);
}

.spt-page-btn.active {
    background: var(--spt-color);
    color: #ffffff;
    border-color: var(--spt-color);
}

.spt-page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.spt-page-btn:focus-visible {
    outline: 2px solid var(--spt-color);
    outline-offset: 2px;
}

/* ==========================================
   Mobile Cards
   ========================================== */
.spt-cards-container {
    display: none;
}

.spt-card {
    background: var(--spt-bg);
    border: 1px solid var(--spt-border);
    border-radius: var(--spt-radius);
    margin-bottom: 12px;
    overflow: hidden;
    box-shadow: var(--spt-shadow);
    transition: box-shadow 0.2s;
}

.spt-card:hover {
    box-shadow: var(--spt-shadow-lg);
}

.spt-card-header {
    background: var(--spt-color);
    color: #ffffff;
    padding: 14px 16px;
    font-weight: 600;
    font-size: 15px;
}

.spt-card-body {
    padding: 0;
}

.spt-card-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 11px 16px;
    border-bottom: 1px solid var(--spt-border);
}

.spt-card-row:last-child {
    border-bottom: none;
}

.spt-card-row:nth-child(even) {
    background: var(--spt-bg-alt);
}

.spt-card-label {
    font-weight: 500;
    color: var(--spt-text-light);
    font-size: 13px;
    flex-shrink: 0;
    min-width: 120px;
}

.spt-card-value {
    font-weight: 600;
    color: var(--spt-text);
    text-align: right;
}

/* ==========================================
   Responsive - Tablet
   ========================================== */
@media screen and (max-width: 1024px) {
    .spt-toolbar {
        padding: 12px;
        gap: 10px;
    }

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

    .spt-search-box {
        max-width: 100%;
    }
}

/* ==========================================
   Responsive - Mobile
   ========================================== */
@media screen and (max-width: 768px) {
    .spt-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .spt-search-box {
        max-width: 100%;
    }

    .spt-toolbar-right {
        flex-wrap: wrap;
    }

    .spt-filter-group,
    .spt-export-group,
    .spt-print-group {
        flex: 1;
        min-width: 0;
    }

    .spt-filter-group select {
        width: 100%;
    }

    /* Hide table, show cards */
    .spt-table-container .spt-table {
        display: none;
    }

    .spt-cards-container {
        display: block;
    }

    /* Pagination */
    .spt-pagination {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .spt-per-page {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {
    .spt-wrapper {
        font-size: 12px;
    }

    .spt-toolbar,
    .spt-pagination,
    .spt-cards-container {
        display: none !important;
    }

    .spt-table-container {
        overflow: visible;
    }

    .spt-table {
        box-shadow: none;
        border: 1px solid #000;
    }

    .spt-table thead th {
        background: #333 !important;
        color: #fff !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    .spt-table tbody tr:nth-child(even) {
        background: #f5f5f5 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    .spt-table .spt-cell-desc {
        white-space: normal;
        max-width: none;
    }
}

/* ==========================================
   Accessibility
   ========================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Screen reader only */
.spt-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}