/**
 * Enhanced Global Search - v1.26.0
 * Improved UI with filters, badges, and better result display
 */

.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    z-index: 10000;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 8vh;
    animation: fadeIn 0.2s ease;
}

.search-overlay.active {
    display: flex;
}

.search-container {
    width: 90%;
    max-width: 750px;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    animation: slideDown 0.3s ease;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
}

/* Inline search container (non-modal) */
.search-container.inline {
    width: 100%;
    max-width: none;
    animation: none;
    max-height: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    margin: 0 auto;
    display: block;
    height: auto;
    overflow: visible;
}

.search-container.inline .search-results {
    flex: none !important;
    height: auto !important;
    overflow-y: visible !important;
    max-height: none !important;
    overflow: visible !important;
}

.search-container.inline .search-input-wrapper {
    padding: 24px 28px;
}

.search-container.inline #global-search-input {
    font-size: 1.3rem;
    padding: 8px 0;
}

.search-container.inline .search-input-wrapper .fa-search {
    font-size: 1.4rem;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.search-input-wrapper {
    display: flex;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    gap: 12px;
    flex-shrink: 0;
}

.search-input-wrapper .fa-search {
    color: var(--text-dim);
    font-size: 1.2rem;
}

#global-search-input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.1rem;
    outline: none;
}

#global-search-input::placeholder {
    color: var(--text-dim);
}

.search-clear,
.search-close {
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 8px;
    min-width: auto;
    min-height: auto;
    transition: color 0.2s ease;
}

.search-clear:hover,
.search-close:hover {
    color: var(--blue-accent);
}

/* Search Filters */
.search-filters {
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    gap: 16px;
    flex-wrap: wrap;
    flex-shrink: 0;
}

.filter-group {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    align-items: center;
}

.filter-label {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--light-text);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-right: 6px;
    display: inline-block;
}

.filter-btn {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: var(--blue-accent);
    padding: 4px 10px;
    border-radius: 16px;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: capitalize;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.filter-btn:hover {
    background: rgba(0, 212, 255, 0.2);
    border-color: var(--blue-accent);
    transform: translateY(-1px);
}

.filter-btn.active {
    background: var(--blue-accent);
    color: #0a0a0a;
    border-color: var(--blue-accent);
}

/* Sort buttons (similar to filter buttons but with green accent) */
.sort-btn {
    background: rgba(58, 227, 116, 0.1);
    border: 1px solid rgba(58, 227, 116, 0.3);
    color: var(--success-color);
    padding: 4px 10px;
    border-radius: 16px;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: capitalize;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.sort-btn:hover {
    background: rgba(58, 227, 116, 0.2);
    border-color: var(--success-color);
    transform: translateY(-1px);
}

.sort-btn.active {
    background: var(--success-color);
    color: #0a0a0a;
    border-color: var(--success-color);
}

.filter-actions {
    display: flex;
    gap: 8px;
}

.export-btn {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: var(--blue-accent);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 5px;
}

.export-btn:hover {
    background: rgba(0, 212, 255, 0.2);
    border-color: var(--blue-accent);
}

.export-btn i {
    font-size: 0.9rem;
}

/* Result Count */
.search-result-count {
    padding: 10px 20px;
    font-size: 0.85rem;
    color: var(--text-dim);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    flex-shrink: 0;
}

/* Results Container */
.search-results {
    flex: 1;
    overflow-y: auto;
    min-height: 200px;
    padding-bottom: 20px;
}

.search-result-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 15px 20px;
    text-decoration: none;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.2s ease;
    cursor: pointer;
}

.search-result-item:hover,
.search-result-item.active {
    background: rgba(0, 212, 255, 0.1);
}

.search-result-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 8px;
    color: var(--blue-accent);
    font-size: 1.2rem;
}

.search-result-content {
    flex: 1;
    min-width: 0;
}

.search-result-title {
    font-weight: 600;
    margin-bottom: 6px;
    line-height: 1.4;
    font-size: 1rem;
}

.search-result-title mark {
    background: var(--blue-accent);
    color: #0a0a0a;
    padding: 2px 4px;
    border-radius: 3px;
}

.search-result-meta {
    font-size: 0.8rem;
    color: var(--text-dim);
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 6px;
}

.search-result-type {
    text-transform: capitalize;
    font-weight: 600;
    color: var(--blue-accent);
}

.badge-verified {
    background: rgba(0, 179, 89, 0.1);
    color: #00b359;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.badge-verified i {
    font-size: 0.7rem;
}

.badge-peer-reviewed {
    background: rgba(255, 165, 0, 0.1);
    color: #ffa500;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.search-result-preview {
    font-size: 0.85rem;
    opacity: 0.8;
    line-height: 1.5;
    margin-top: 4px;
}

.search-result-preview mark {
    background: var(--blue-accent);
    color: #0a0a0a;
    padding: 1px 3px;
    border-radius: 2px;
}

.search-result-score {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--blue-accent);
}

/* No Results */
.search-no-results,
.search-empty {
    padding: 60px 20px;
    text-align: center;
    color: var(--text-dim);
}

.search-no-results i,
.search-empty i {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.3;
}

.search-no-results p,
.search-empty p {
    margin: 8px 0;
}

.search-tip {
    font-size: 0.9rem;
    opacity: 0.7;
}

.search-features {
    margin-top: 30px;
    text-align: left;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
    background: rgba(0, 212, 255, 0.05);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.search-features h4 {
    color: var(--text-color);
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.search-features ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.search-features li {
    padding: 6px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--text-color);
}

.search-features li i {
    color: #00b359;
    font-size: 0.8rem;
}

/* Search Footer */
.search-footer {
    padding: 12px 20px;
    background: rgba(0, 0, 0, 0.2);
    text-align: center;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

.search-hint {
    font-size: 0.8rem;
    color: var(--text-dim);
}

.search-hint kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    font-size: 0.75rem;
    font-family: monospace;
    margin: 0 2px;
}

/* Search History */
.search-history {
    padding: 12px 0;
}

.search-history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    font-size: 0.85rem;
    color: var(--text-dim);
    font-weight: 600;
}

.search-clear-history {
    background: none;
    border: none;
    color: var(--blue-accent);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 4px 8px;
    min-width: auto;
    min-height: auto;
}

.search-history-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: none;
    border: none;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
    text-align: left;
    cursor: pointer;
    transition: background 0.2s ease;
}

.search-history-item:hover {
    background: rgba(0, 212, 255, 0.05);
}

.search-history-item i {
    color: var(--text-dim);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .search-overlay {
        padding-top: 0;
        align-items: stretch;
    }

    .search-container {
        width: 100%;
        max-width: 100%;
        border-radius: 0;
        height: 100vh;
        max-height: 100vh;
    }

    .search-filters {
        padding: 12px 15px;
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }

    .filter-group {
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
        padding-bottom: 4px;
    }

    .filter-group::-webkit-scrollbar {
        height: 4px;
    }

    .filter-group::-webkit-scrollbar-thumb {
        background: rgba(0, 212, 255, 0.3);
        border-radius: 2px;
    }

    .filter-label {
        font-size: 0.75rem;
        min-width: fit-content;
        margin-right: 8px;
    }

    .filter-btn,
    .sort-btn {
        font-size: 0.8rem;
        padding: 6px 12px;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .export-btn {
        font-size: 0.75rem;
        padding: 5px 10px;
    }

    .search-result-item {
        padding: 12px 15px;
    }

    .search-result-icon {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    .search-result-score {
        width: 32px;
        height: 32px;
        font-size: 0.7rem;
    }
}

/* Theme Support */
:root[data-theme="dark"] .search-container {
    background: #1a1a1a;
}

:root[data-theme="dark"] .search-hint kbd {
    background: #2a2a2a;
}

:root[data-theme="light"] .search-container {
    background: #f5f5f5;
}

:root[data-theme="light"] .search-hint kbd {
    background: #ffffff;
}

:root[data-theme="light"] .search-features {
    background: rgba(0, 212, 255, 0.05);
    border-color: rgba(0, 212, 255, 0.2);
}

:root[data-theme="light"] .search-result-item:hover,
:root[data-theme="light"] .search-result-item.active {
    background: rgba(0, 212, 255, 0.08);
}

/* Direct Answer Box */
.search-direct-answer {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 179, 89, 0.1));
    border: 2px solid var(--blue-accent);
    border-radius: 12px;
    padding: 20px;
    margin: 0 20px 15px 20px;
}

.direct-answer-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--blue-accent);
}

.direct-answer-header i {
    font-size: 1.3rem;
}

.answer-confidence {
    margin-left: auto;
    font-size: 0.8rem;
    background: rgba(0, 212, 255, 0.2);
    padding: 3px 10px;
    border-radius: 12px;
}

.direct-answer-content {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-color);
    margin-bottom: 12px;
}

.direct-answer-content mark.entity-date {
    background: #ffa500;
    color: #0a0a0a;
    padding: 2px 6px;
    border-radius: 3px;
    font-weight: 600;
}

.direct-answer-content mark.entity-distance,
.direct-answer-content mark.entity-velocity {
    background: #00d4ff;
    color: #0a0a0a;
    padding: 2px 6px;
    border-radius: 3px;
    font-weight: 600;
}

.direct-answer-source {
    font-size: 0.85rem;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Section Headers */
.search-section-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 20px;
    background: rgba(0, 212, 255, 0.05);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.9rem;
}

.search-section-header i {
    color: var(--blue-accent);
}

/* Loading Spinner */
.search-loading {
    padding: 30px 20px;
    text-align: center;
}

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-dim);
}

.loading-spinner i {
    font-size: 2rem;
    color: var(--blue-accent);
}

.loading-spinner span {
    font-size: 0.9rem;
}

/* Error State */
.search-error {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px;
    background: rgba(255, 100, 100, 0.1);
    border: 1px solid rgba(255, 100, 100, 0.3);
    border-radius: 8px;
    color: #ff6464;
    font-size: 0.9rem;
}

.search-error i {
    font-size: 1.2rem;
}

/* External Result Badge */
.badge-external {
    background: rgba(138, 43, 226, 0.1);
    color: #8a2be2;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-arxiv {
    background: rgba(255, 165, 0, 0.1);
    color: #ffa500;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* External Results Styling */
.external-result {
    border-left: 3px solid #8a2be2;
}

.external-result:hover {
    background: rgba(138, 43, 226, 0.08);
}

/* Mobile Responsive for New Elements */
@media (max-width: 768px) {
    .search-direct-answer {
        margin: 0 15px 12px 15px;
        padding: 15px;
    }

    .direct-answer-header {
        font-size: 0.9rem;
    }

    .direct-answer-content {
        font-size: 0.95rem;
    }

    .search-section-header {
        padding: 12px 15px;
    }

    /* Inline Search Mobile Improvements */
    .search-container.inline {
        border-radius: 8px;
    }

    .search-container.inline .search-input-wrapper {
        padding: 16px 18px;
        flex-wrap: wrap;
    }

    .search-container.inline #global-search-input {
        font-size: 1rem;
        padding: 6px 0;
        min-width: 0;
    }

    .search-container.inline .search-input-wrapper .fa-search {
        font-size: 1.1rem;
    }

    .search-container.inline .search-filters {
        padding: 10px 15px;
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .search-container.inline .filter-group {
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
        padding-bottom: 5px;
    }

    .search-container.inline .filter-group::-webkit-scrollbar {
        display: none;
    }

    .search-container.inline .filter-actions {
        width: 100%;
        justify-content: flex-start;
    }

    .search-container.inline .export-btn {
        flex: 1;
        justify-content: center;
    }

    .search-container.inline .search-result-item {
        gap: 12px;
        padding: 12px 15px;
    }

    .search-container.inline .search-result-title {
        font-size: 0.95rem;
    }

    .search-container.inline .search-result-meta {
        font-size: 0.75rem;
    }

    .search-container.inline .search-result-preview {
        font-size: 0.8rem;
    }

    .search-empty {
        padding: 40px 20px;
    }

    .search-empty i {
        font-size: 2.5rem;
    }

    .search-empty p {
        font-size: 0.95rem;
    }

    .search-container.inline .search-results {
        min-height: 200px;
        max-height: none;
        overflow-y: visible;
        flex: none;
        height: auto;
    }
}

/* Theme Support for New Elements */
:root[data-theme="dark"] .search-direct-answer {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(0, 179, 89, 0.08));
}

:root[data-theme="light"] .search-direct-answer {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(0, 179, 89, 0.12));
}

:root[data-theme="light"] .search-section-header {
    background: rgba(0, 212, 255, 0.08);
}

:root[data-theme="light"] .external-result:hover {
    background: rgba(138, 43, 226, 0.12);
}