/**
 * Frontend Styles for SBOS Plugin
 */

/* Base styles */
.sbos-wrapper {
    margin: 20px 0;
}

/* Screen reader text */
.sbos-screen-reader-text,
.screen-reader-text {
    position: absolute !important;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    width: 1px;
    height: 1px;
    overflow: hidden;
    white-space: nowrap;
}

/* Loading states */
.sbos-loading {
    position: relative;
    opacity: 0.7;
    pointer-events: none;
}

.sbos-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 6px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    min-width: 120px;
}

.sbos-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #0073aa;
    border-radius: 50%;
    animation: sbos-spin 1s linear infinite;
    margin: 0 auto 10px;
}

@keyframes sbos-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.sbos-loader span {
    display: block;
    color: #666;
    font-size: 14px;
    font-weight: 500;
}

/* Error messages */
.sbos-error-message {
    background: #dc3232;
    color: #fff;
    padding: 12px 16px;
    margin: 15px 0;
    border-radius: 4px;
    font-size: 14px;
    line-height: 1.4;
}

.sbos-error-message:before {
    content: "⚠ ";
    font-weight: bold;
    margin-right: 5px;
}

/* Success messages */
.sbos-success-message {
    background: #46b450;
    color: #fff;
    padding: 12px 16px;
    margin: 15px 0;
    border-radius: 4px;
    font-size: 14px;
    line-height: 1.4;
}

.sbos-success-message:before {
    content: "✓ ";
    font-weight: bold;
    margin-right: 5px;
}

/* No results messages */
.sbos-no-downloads,
.sbos-no-mitarbeiter,
.sbos-no-results {
    text-align: center;
    padding: 40px 20px;
    color: #666;
    font-style: italic;
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 6px;
}

/* Button styles */
.sbos-btn,
.sbos-load-more-btn {
    display: inline-block;
    padding: 10px 20px;
    background: #0073aa;
    color: #fff;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.sbos-btn:hover,
.sbos-load-more-btn:hover:not(:disabled) {
    background: #005a87;
    color: #fff;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.sbos-btn:disabled,
.sbos-load-more-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Focus styles for accessibility */
.sbos-btn:focus,
.sbos-load-more-btn:focus,
.sbos-dl-btn:focus,
.sbos-category-filter:focus,
.sbos-table-search:focus {
    outline: 2px solid #0073aa;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .sbos-school,
    .sbos-mitarbeiter-card,
    .sbos-download-table {
        border: 2px solid currentColor;
    }

    .sbos-btn,
    .sbos-load-more-btn {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .sbos-spinner {
        animation: none;
    }

    .sbos-school,
    .sbos-mitarbeiter-card,
    .sbos-btn,
    .sbos-load-more-btn {
        transition: none;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .sbos-loader {
        background: rgba(30, 30, 30, 0.95);
        color: #fff;
    }

    .sbos-loader span {
        color: #ccc;
    }

    .sbos-no-downloads,
    .sbos-no-mitarbeiter,
    .sbos-no-results {
        background: #2c2c2c;
        border-color: #444;
        color: #ccc;
    }
}

/* Print styles */
@media print {
    .sbos-loader,
    .sbos-load-more-btn,
    .sbos-category-filter,
    .sbos-table-search,
    .sbos-filter-wrapper {
        display: none !important;
    }

    .sbos-school,
    .sbos-mitarbeiter-card {
        break-inside: avoid;
        margin-bottom: 20px;
    }

    .sbos-download-table {
        font-size: 12px;
    }

    .sbos-download-table th,
    .sbos-download-table td {
        padding: 5px;
    }
}

/* Base responsive grid */
.sbos-grid {
    display: grid;
    gap: 20px;
}

.sbos-grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.sbos-grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.sbos-grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Mobile responsive */
@media (max-width: 768px) {
    .sbos-wrapper {
        margin: 15px 0;
    }

    .sbos-loader {
        padding: 15px;
        min-width: 100px;
    }

    .sbos-loader span {
        font-size: 12px;
    }

    .sbos-error-message,
    .sbos-success-message {
        padding: 10px 12px;
        font-size: 13px;
    }

    .sbos-no-downloads,
    .sbos-no-mitarbeiter,
    .sbos-no-results {
        padding: 30px 15px;
        font-size: 14px;
    }

    .sbos-btn,
    .sbos-load-more-btn {
        padding: 12px 24px;
        font-size: 16px;
    }

    .sbos-grid {
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .sbos-grid-2,
    .sbos-grid-3,
    .sbos-grid-4 {
        grid-template-columns: 1fr;
    }

    .sbos-btn,
    .sbos-load-more-btn {
        width: 100%;
        text-align: center;
    }
}