/**
 * Stone Soup Semantic Search - Frontend Styles
 */

/* Base container */
.ssss-search-container {
    max-width: 100%;
    margin: 2rem 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    position: relative;
    z-index: 1;
}

/* Search form */
.ssss-search-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.ssss-search-wrapper {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
    background: #fff;
    border: 2px solid #ddd;
    border-radius: 8px;
    padding: 4px;
    transition: border-color 0.2s ease;
}

.ssss-search-wrapper:focus-within {
    border-color: #d2691e;
    box-shadow: 0 0 0 3px rgba(210, 105, 30, 0.1);
}

/* Search input */
.ssss-search-input {
    flex: 1;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: none;
    background: transparent;
    outline: none;
    color: #333;
    min-width: 0; /* Prevent flex overflow */
}

.ssss-search-input::placeholder {
    color: #999;
    opacity: 1;
}

.ssss-search-input:focus {
    outline: none;
}

/* Search button */
.ssss-search-button {
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, #d2691e, #cd5c00);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    user-select: none;
}

.ssss-search-button:hover:not(:disabled) {
    background: linear-gradient(135deg, #cd5c00, #b8571a);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(210, 105, 30, 0.3);
}

.ssss-search-button:active {
    transform: translateY(0);
}

.ssss-search-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.ssss-search-icon {
    display: inline-block;
}

/* Search filters */
.ssss-search-filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
    padding: 0.5rem 0;
}

.ssss-search-filters label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #666;
}

.ssss-search-filters select {
    padding: 0.25rem 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
}

/* Search hint */
.ssss-search-hint {
    font-size: 0.875rem;
    color: #666;
    margin: 0.5rem 0 0 0;
    font-style: italic;
}

/* Results container */
.ssss-search-results {
    margin-top: 2rem;
    overflow: hidden;
    word-wrap: break-word;
}

/* Loading state */
.ssss-loading {
    text-align: center;
    padding: 3rem 2rem;
    color: #666;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.ssss-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #d2691e;
    border-radius: 50%;
    animation: ssss-spin 1s linear infinite;
}

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

.ssss-loading-text {
    font-size: 1.1rem;
    font-weight: 500;
}

/* Error state */
.ssss-error {
    background: linear-gradient(135deg, #fee, #fcc);
    color: #c33;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #faa;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 1rem 0;
}

.ssss-error-icon {
    font-size: 1.2rem;
}

/* No results */
.ssss-no-results {
    text-align: center;
    padding: 3rem 2rem;
    color: #666;
}

.ssss-no-results-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.ssss-no-results h3 {
    margin: 1rem 0;
    color: #333;
    font-size: 1.5rem;
}

.ssss-search-suggestions {
    margin-top: 2rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
}

.ssss-search-suggestions ul {
    list-style: none;
    padding: 0;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.ssss-suggestion {
    background: #fff;
    border: 1px solid #ddd;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.ssss-suggestion:hover {
    background: #d2691e;
    color: white;
    border-color: #d2691e;
}

/* Results header */
.ssss-results-header {
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #333;
    font-size: 1.1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e9ecef;
}

/* Results list */
.ssss-results-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Individual result */
.ssss-result-item {
    background: linear-gradient(135deg, #fff, #fafbfc);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
    overflow: hidden;
    position: relative;
}

.ssss-result-item:hover,
.ssss-result-item:focus-within {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border-color: #d2691e;
}

.ssss-result-item:focus {
    outline: 3px solid rgba(210, 105, 30, 0.3);
    outline-offset: 2px;
}

/* Result header */
.ssss-result-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.ssss-result-title {
    margin: 0;
    flex: 1;
    min-width: 0;
}

.ssss-result-title a {
    color: #2c3e50;
    text-decoration: none;
    font-size: 1.3rem;
    font-weight: 600;
    line-height: 1.3;
    transition: color 0.2s ease;
    display: block;
}

.ssss-result-title a:hover,
.ssss-result-title a:focus {
    color: #d2691e;
    text-decoration: underline;
}

.ssss-result-score {
    background: linear-gradient(135deg, #8db4aa, #6a9c89);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Result metadata */
.ssss-result-meta {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

.ssss-author {
    background: #f7e882;
    color: #333;
    padding: 0.3rem 0.6rem;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
}

.ssss-difficulty {
    padding: 0.3rem 0.6rem;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: capitalize;
}

.ssss-difficulty-easy {
    background: #d4edda;
    color: #155724;
}

.ssss-difficulty-medium {
    background: #fff3cd;
    color: #856404;
}

.ssss-difficulty-challenging {
    background: #f8d7da;
    color: #721c24;
}

.ssss-reading-time {
    color: #6c757d;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.ssss-reading-time::before {
    content: "🕒";
}

/* Result excerpt */
.ssss-result-excerpt {
    margin: 0.75rem 0;
    color: #495057;
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Themes and metadata */
.ssss-themes,
.ssss-matched-terms {
    font-size: 0.85rem;
    color: #6c757d;
    margin: 0.5rem 0;
    line-height: 1.4;
}

.ssss-themes {
    font-style: italic;
}

.ssss-matched-terms {
    font-weight: 500;
    color: #d2691e;
}

/* Content warning */
.ssss-content-warning {
    background: #fff3cd;
    color: #856404;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.85rem;
    margin-top: 0.75rem;
    border-left: 3px solid #ffc107;
}

/* Accessibility */
.screen-reader-text {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(1px, 1px, 1px, 1px);
}

/* Responsive design */
@media (max-width: 768px) {
    .ssss-search-container {
        margin: 1.5rem 0;
    }
    
    .ssss-search-wrapper {
        flex-direction: column;
        gap: 0.75rem;
        padding: 0.75rem;
    }
    
    .ssss-search-button {
        width: 100%;
        justify-content: center;
    }
    
    .ssss-search-filters {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .ssss-search-filters label {
        justify-content: space-between;
    }
    
    .ssss-result-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .ssss-result-score {
        align-self: flex-end;
    }
    
    .ssss-result-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .ssss-search-suggestions ul {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .ssss-search-container {
        margin: 1rem 0;
    }
    
    .ssss-result-item {
        padding: 1rem;
    }
    
    .ssss-result-title a {
        font-size: 1.1rem;
    }
    
    .ssss-loading,
    .ssss-no-results {
        padding: 2rem 1rem;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .ssss-search-wrapper {
        border-width: 3px;
    }
    
    .ssss-result-item {
        border-width: 2px;
    }
    
    .ssss-search-button {
        border: 2px solid #000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .ssss-spinner {
        animation: none;
        border: 4px solid #d2691e;
    }
    
    .ssss-result-item,
    .ssss-search-button,
    .ssss-suggestion {
        transition: none;
    }
    
    .ssss-result-item:hover {
        transform: none;
    }
    
    .ssss-search-button:hover {
        transform: none;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .ssss-search-container {
        color: #e9ecef;
    }
    
    .ssss-search-wrapper {
        background: #2d3748;
        border-color: #4a5568;
    }
    
    .ssss-search-input {
        color: #e9ecef;
    }
    
    .ssss-search-input::placeholder {
        color: #a0aec0;
    }
    
    .ssss-result-item {
        background: linear-gradient(135deg, #2d3748, #1a202c);
        border-color: #4a5568;
        color: #e9ecef;
    }
    
    .ssss-result-title a {
        color: #e2e8f0;
    }
    
    .ssss-result-title a:hover {
        color: #ed8936;
    }
    
    .ssss-result-excerpt {
        color: #cbd5e0;
    }
    
    .ssss-themes,
    .ssss-matched-terms {
        color: #a0aec0;
    }
    
    .ssss-matched-terms {
        color: #ed8936;
    }
    
    .ssss-search-suggestions {
        background: #2d3748;
    }
    
    .ssss-suggestion {
        background: #4a5568;
        border-color: #718096;
        color: #e2e8f0;
    }
    
    .ssss-suggestion:hover {
        background: #ed8936;
        border-color: #ed8936;
    }
}

/* Print styles */
@media print {
    .ssss-search-form,
    .ssss-search-button,
    .ssss-spinner,
    .ssss-search-suggestions {
        display: none;
    }
    
    .ssss-result-item {
        page-break-inside: avoid;
        border: 1px solid #000;
        box-shadow: none;
    }
    
    .ssss-result-title a {
        color: #000;
        text-decoration: underline;
    }
}