/**
 * SqueezeTables Frontend Stylesheet
 *
 * Styles for the public-facing table and chart rendering, including
 * themes, responsive modes, cell formatting, and dark mode support.
 *
 * @package SqueezeTables
 * @since   1.0.0
 */

/* ==========================================================================
   CSS Custom Properties (Light Mode Defaults)
   ========================================================================== */

:root {
    --st-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --st-font-size: 14px;
    --st-line-height: 1.5;
    --st-border-radius: 4px;

    /* Colors */
    --st-bg: #ffffff;
    --st-bg-alt: #f9fafb;
    --st-bg-header: #f3f4f6;
    --st-bg-hover: #eef2ff;
    --st-text: #1f2937;
    --st-text-muted: #6b7280;
    --st-border: #e5e7eb;
    --st-border-strong: #d1d5db;
    --st-primary: #4f46e5;
    --st-primary-hover: #4338ca;
    --st-primary-light: #eef2ff;
    --st-error-bg: #fef2f2;
    --st-error-text: #dc2626;
    --st-error-border: #fecaca;
    --st-success: #16a34a;
    --st-warning: #f59e0b;
    --st-link: #2563eb;
    --st-link-hover: #1d4ed8;

    /* Spacing */
    --st-cell-padding: 10px 14px;
    --st-cell-padding-compact: 6px 10px;
    --st-toolbar-gap: 12px;
}

/* ==========================================================================
   Dark Mode
   ========================================================================== */

@media (prefers-color-scheme: dark) {
    :root {
        --st-bg: #1f2937;
        --st-bg-alt: #111827;
        --st-bg-header: #374151;
        --st-bg-hover: #374151;
        --st-text: #f9fafb;
        --st-text-muted: #9ca3af;
        --st-border: #374151;
        --st-border-strong: #4b5563;
        --st-primary: #818cf8;
        --st-primary-hover: #6366f1;
        --st-primary-light: #1e1b4b;
        --st-error-bg: #450a0a;
        --st-error-text: #f87171;
        --st-error-border: #7f1d1d;
        --st-success: #22c55e;
        --st-warning: #fbbf24;
        --st-link: #60a5fa;
        --st-link-hover: #93bbfd;
    }
}

/* ==========================================================================
   Main Container
   ========================================================================== */

.squeezetables-container {
    font-family: var(--st-font-family);
    font-size: var(--st-font-size);
    line-height: var(--st-line-height);
    color: var(--st-text);
    margin: 1.5em 0;
    position: relative;
}

.squeezetables-container *,
.squeezetables-container *::before,
.squeezetables-container *::after {
    box-sizing: border-box;
}

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

.squeezetables-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    color: var(--st-text-muted);
    font-size: 14px;
    gap: 10px;
}

.squeezetables-loading.st-hidden {
    display: none;
}

.squeezetables-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--st-border);
    border-top-color: var(--st-primary);
    border-radius: 50%;
    animation: st-spin 0.7s linear infinite;
}

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

/* ==========================================================================
   Error Messages
   ========================================================================== */

.squeezetables-error {
    padding: 12px 16px;
    background: var(--st-error-bg);
    color: var(--st-error-text);
    border: 1px solid var(--st-error-border);
    border-radius: var(--st-border-radius);
    margin: 8px 0;
    font-size: 14px;
    line-height: 1.5;
}

/* ==========================================================================
   Toolbar (Search + Export Bar)
   ========================================================================== */

.squeezetables-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--st-toolbar-gap);
    margin-bottom: 12px;
    padding: 8px 0;
}

.squeezetables-toolbar-left {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
}

.squeezetables-toolbar-right {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

/* Search Input */
.squeezetables-search {
    padding: 7px 12px;
    border: 1px solid var(--st-border-strong);
    border-radius: var(--st-border-radius);
    background: var(--st-bg);
    color: var(--st-text);
    font-size: 13px;
    font-family: var(--st-font-family);
    max-width: 280px;
    width: 100%;
    transition: border-color 0.15s ease;
    outline: none;
}

.squeezetables-search:focus {
    border-color: var(--st-primary);
    box-shadow: 0 0 0 2px var(--st-primary-light);
}

.squeezetables-search::placeholder {
    color: var(--st-text-muted);
}

/* Export Buttons */
.squeezetables-export-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border: 1px solid var(--st-border-strong);
    border-radius: var(--st-border-radius);
    background: var(--st-bg);
    color: var(--st-text);
    font-size: 12px;
    font-family: var(--st-font-family);
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.squeezetables-export-btn:hover {
    background: var(--st-bg-alt);
    border-color: var(--st-primary);
    color: var(--st-primary);
}

.squeezetables-export-btn:active {
    transform: translateY(1px);
}

/* ==========================================================================
   Table Wrapper
   ========================================================================== */

.squeezetables-table {
    width: 100%;
    overflow: visible;
}

.st-table-wrapper {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ==========================================================================
   Main Table Element
   ========================================================================== */

table.st-table {
    width: 100%;
    border-collapse: collapse;
    border-spacing: 0;
    background: var(--st-bg);
    font-size: var(--st-font-size);
    table-layout: fixed;
}

/* -- Header Cells -------------------------------------------------------- */

.st-table thead th {
    padding: var(--st-cell-padding);
    background: var(--st-bg-header);
    color: var(--st-header-text, var(--st-text));
    font-weight: 600;
    font-size: 13px;
    text-align: left;
    border-bottom: 2px solid var(--st-border-strong);
    overflow-wrap: break-word;
    position: sticky;
    top: 0;
    z-index: 2;
    user-select: none;
}

.st-table thead th.st-sortable {
    cursor: pointer;
    padding-right: 24px;
    position: relative;
}

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

/* Sort Indicators */
.st-table thead th.st-sortable::after {
    content: "\2195"; /* up-down arrow */
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 11px;
    color: var(--st-text-muted);
    opacity: 0.4;
}

.st-table thead th.st-sort-asc::after {
    content: "\2191"; /* up arrow */
    opacity: 1;
    color: var(--st-primary);
}

.st-table thead th.st-sort-desc::after {
    content: "\2193"; /* down arrow */
    opacity: 1;
    color: var(--st-primary);
}

/* -- Data Cells ---------------------------------------------------------- */

.st-table tbody td {
    padding: var(--st-cell-padding);
    border-bottom: 1px solid var(--st-border);
    color: var(--st-text);
    vertical-align: middle;
    overflow-wrap: break-word;
    transition: background-color 0.1s ease;
}

/* -- Row States ---------------------------------------------------------- */

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

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

/* -- Compact Mode -------------------------------------------------------- */

.st-table.st-compact thead th,
.st-table.st-compact tbody td {
    padding: var(--st-cell-padding-compact);
    font-size: 13px;
}

/* -- Footer -------------------------------------------------------------- */

.st-table tfoot td {
    padding: var(--st-cell-padding);
    background: var(--st-bg-header);
    border-top: 2px solid var(--st-border-strong);
    font-weight: 600;
    font-size: 13px;
}

/* ==========================================================================
   Theme: Default
   Clean borders, subtle header background.
   ========================================================================== */

.st-theme-default table.st-table {
    border: 1px solid var(--st-border);
    border-radius: var(--st-border-radius);
    overflow: hidden;
}

.st-theme-default .st-table thead th {
    border-bottom: 2px solid var(--st-border-strong);
}

.st-theme-default .st-table tbody td {
    border-bottom: 1px solid var(--st-border);
}

/* ==========================================================================
   Theme: Striped
   Alternating row colors for readability.
   ========================================================================== */

.st-theme-striped table.st-table {
    border: 1px solid var(--st-border);
    border-radius: var(--st-border-radius);
    overflow: hidden;
}

.st-theme-striped .st-table tbody tr.st-row-odd td {
    background: var(--st-bg-alt);
}

.st-theme-striped .st-table tbody tr.st-row-even td {
    background: var(--st-bg);
}

.st-theme-striped .st-table.st-hover tbody tr:hover td {
    background: var(--st-bg-hover);
}

/* ==========================================================================
   Theme: Bordered
   Full cell borders on every cell.
   ========================================================================== */

.st-theme-bordered table.st-table {
    border: 2px solid var(--st-border-strong);
    border-radius: var(--st-border-radius);
    overflow: hidden;
}

.st-theme-bordered .st-table thead th {
    border: 1px solid var(--st-border-strong);
    border-bottom-width: 2px;
}

.st-theme-bordered .st-table tbody td {
    border: 1px solid var(--st-border);
}

.st-theme-bordered .st-table tfoot td {
    border: 1px solid var(--st-border-strong);
}

/* ==========================================================================
   Theme: Minimal
   No borders, clean open look.
   ========================================================================== */

.st-theme-minimal table.st-table {
    border: none;
}

.st-theme-minimal .st-table thead th {
    background: transparent;
    border-bottom: 2px solid var(--st-border);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.05em;
    color: var(--st-header-text, var(--st-text-muted));
}

.st-theme-minimal .st-table tbody td {
    border-bottom: 1px solid var(--st-border);
}

.st-theme-minimal .st-table tbody tr:last-child td {
    border-bottom: none;
}

.st-theme-minimal .st-table tfoot td {
    background: transparent;
    border-top: 2px solid var(--st-border);
}

/* ==========================================================================
   Table Info (Showing X of Y entries)
   ========================================================================== */

.st-table-info {
    padding: 10px 4px;
    font-size: 13px;
    color: var(--st-text-muted);
}

/* ==========================================================================
   Pagination Controls
   ========================================================================== */

.st-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 12px 4px;
    flex-wrap: wrap;
}

.st-page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 4px 10px;
    border: 1px solid var(--st-border-strong);
    border-radius: var(--st-border-radius);
    background: var(--st-bg);
    color: var(--st-text);
    font-size: 13px;
    font-family: var(--st-font-family);
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
}

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

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

.st-page-btn.st-page-active {
    background: var(--st-primary);
    border-color: var(--st-primary);
    color: #ffffff;
    font-weight: 600;
}

.st-page-info {
    padding: 4px 12px;
    font-size: 13px;
    color: var(--st-text-muted);
}

.st-page-ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    color: var(--st-text-muted);
    font-size: 13px;
}

/* ==========================================================================
   Responsive Mode: Scroll
   Horizontal scroll wrapper for wide tables.
   ========================================================================== */

.st-responsive-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.st-responsive-scroll table.st-table {
    min-width: 600px;
}

/* ==========================================================================
   Responsive Mode: Collapse
   Progressively hide lower-priority columns on smaller screens.
   ========================================================================== */

.st-responsive-collapse .st-col-priority-low {
    /* visible by default */
}

@media (max-width: 768px) {
    .st-responsive-collapse .st-col-priority-low {
        display: none;
    }
}

@media (max-width: 480px) {
    .st-responsive-collapse .st-col-priority-medium {
        display: none;
    }
}

/* ==========================================================================
   Responsive Mode: Stack
   Stack table cells vertically on mobile, showing column labels.
   ========================================================================== */

@media (max-width: 768px) {
    .st-responsive-stack table.st-table,
    .st-responsive-stack .st-table thead,
    .st-responsive-stack .st-table tbody,
    .st-responsive-stack .st-table tfoot,
    .st-responsive-stack .st-table tr,
    .st-responsive-stack .st-table th,
    .st-responsive-stack .st-table td {
        display: block;
    }

    .st-responsive-stack .st-table thead {
        /* Hide table header on mobile — labels shown via data-label attribute */
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        border: 0;
    }

    .st-responsive-stack .st-table tbody tr {
        margin-bottom: 12px;
        border: 1px solid var(--st-border);
        border-radius: var(--st-border-radius);
        overflow: hidden;
    }

    .st-responsive-stack .st-table tbody td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 8px 14px;
        border-bottom: 1px solid var(--st-border);
        text-align: right;
    }

    .st-responsive-stack .st-table tbody td::before {
        content: attr(data-label);
        font-weight: 600;
        text-align: left;
        margin-right: 16px;
        flex-shrink: 0;
        color: var(--st-text);
    }

    .st-responsive-stack .st-table tbody td:last-child {
        border-bottom: none;
    }
}

/* ==========================================================================
   Responsive Mode: Flip
   Transpose the table — headers on the left, data scrolls horizontally.
   ========================================================================== */

@media (max-width: 768px) {
    .st-responsive-flip {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .st-responsive-flip table.st-table {
        display: flex;
        overflow: hidden;
    }

    .st-responsive-flip .st-table thead {
        display: flex;
        flex-shrink: 0;
        min-width: min-content;
    }

    .st-responsive-flip .st-table tbody {
        display: flex;
        overflow-x: auto;
    }

    .st-responsive-flip .st-table tr {
        display: flex;
        flex-direction: column;
        min-width: min-content;
        flex-shrink: 0;
    }

    .st-responsive-flip .st-table thead th {
        display: block;
        border-bottom: 1px solid var(--st-border);
        border-right: 2px solid var(--st-border-strong);
        text-align: left;
        white-space: nowrap;
    }

    .st-responsive-flip .st-table tbody td {
        display: block;
        border-bottom: 1px solid var(--st-border);
        white-space: nowrap;
    }
}

/* ==========================================================================
   Chart Styles
   ========================================================================== */

.squeezetables-chart {
    position: relative;
}

.squeezetables-canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

.st-chart-wrapper {
    position: relative;
}

.st-google-chart {
    width: 100%;
    height: 100%;
}

/* ==========================================================================
   Cell Formatting: Numbers, Currency, Percentage
   ========================================================================== */

.st-cell-number,
.st-cell-currency,
.st-cell-percentage,
.st-type-number,
.st-type-currency,
.st-type-percentage {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   Cell Formatting: Email and URL Links
   ========================================================================== */

.st-cell-email a,
.st-cell-url a,
.st-type-email a,
.st-type-url a {
    color: var(--st-link);
    text-decoration: none;
    transition: color 0.15s ease;
}

.st-cell-email a:hover,
.st-cell-url a:hover,
.st-type-email a:hover,
.st-type-url a:hover {
    color: var(--st-link-hover);
    text-decoration: underline;
}

/* ==========================================================================
   Cell Formatting: Images
   ========================================================================== */

.st-cell-image img,
.st-type-image img,
img.st-cell-image {
    max-width: 80px;
    max-height: 60px;
    height: auto;
    border-radius: var(--st-border-radius);
    object-fit: cover;
    vertical-align: middle;
}

/* ==========================================================================
   Cell Formatting: Boolean (Check / Cross)
   ========================================================================== */

.st-cell-boolean .st-check,
.st-bool-true {
    color: var(--st-success);
    font-size: 16px;
    font-weight: 700;
}

.st-cell-boolean .st-cross,
.st-bool-false {
    color: var(--st-error-text);
    font-size: 16px;
    font-weight: 700;
}

/* ==========================================================================
   Cell Formatting: Star Rating
   ========================================================================== */

.st-star-rating {
    display: inline-flex;
    gap: 1px;
    white-space: nowrap;
}

.st-cell-rating .st-star,
.st-star-rating .st-star {
    font-size: 16px;
    line-height: 1;
}

.st-star-rating .st-star-full {
    color: var(--st-warning);
}

.st-star-rating .st-star-half {
    color: var(--st-warning);
    opacity: 0.65;
}

.st-star-rating .st-star-empty {
    color: var(--st-border-strong);
}

/* ==========================================================================
   Cell Formatting: Text Alignment Utilities
   ========================================================================== */

.st-table td.st-align-left,
.st-table th.st-align-left   { text-align: left; }

.st-table td.st-align-center,
.st-table th.st-align-center { text-align: center; }

.st-table td.st-align-right,
.st-table th.st-align-right  { text-align: right; }

/* ==========================================================================
   No Data / Empty State
   ========================================================================== */

.st-empty {
    padding: 40px 20px;
    text-align: center;
    color: var(--st-text-muted);
    font-size: 14px;
    font-style: italic;
}

.st-error {
    padding: 12px 16px;
    background: var(--st-error-bg);
    color: var(--st-error-text);
    border: 1px solid var(--st-error-border);
    border-radius: var(--st-border-radius);
    margin: 8px 0;
}

/* ==========================================================================
   Search Bar (rendered by PHP)
   ========================================================================== */

.st-search-bar {
    margin-bottom: 12px;
}

.st-search-input {
    padding: 7px 12px;
    border: 1px solid var(--st-border-strong);
    border-radius: var(--st-border-radius);
    background: var(--st-bg);
    color: var(--st-text);
    font-size: 13px;
    font-family: var(--st-font-family);
    max-width: 280px;
    width: 100%;
    transition: border-color 0.15s ease;
    outline: none;
}

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

/* ==========================================================================
   Export Toolbar (rendered by PHP)
   ========================================================================== */

.st-export-toolbar {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.st-export-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border: 1px solid var(--st-border-strong);
    border-radius: var(--st-border-radius);
    background: var(--st-bg);
    color: var(--st-text);
    font-size: 12px;
    font-family: var(--st-font-family);
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.st-export-btn:hover {
    background: var(--st-bg-alt);
    border-color: var(--st-primary);
    color: var(--st-primary);
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .squeezetables-toolbar,
    .squeezetables-search,
    .squeezetables-export-btn,
    .st-export-toolbar,
    .st-search-bar,
    .st-pagination,
    .squeezetables-loading {
        display: none !important;
    }

    .squeezetables-container {
        margin: 0;
        font-size: 11px;
    }

    table.st-table {
        border: 1px solid #000;
    }

    .st-table thead th {
        background: #eee !important;
        border: 1px solid #000;
        color: #000;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    .st-table tbody td {
        border: 1px solid #ccc;
        color: #000;
    }
}

/* ==========================================================================
   Responsive Utilities
   ========================================================================== */

@media (max-width: 600px) {
    .squeezetables-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .squeezetables-toolbar-left,
    .squeezetables-toolbar-right {
        width: 100%;
    }

    .squeezetables-search {
        max-width: none;
    }

    .squeezetables-toolbar-right {
        justify-content: flex-start;
    }
}