/**
 * search.css - AI Semantic Search Styles (Books + Notes)
 */

/********** Search Dropdown **********/
.search-dropdown {
    position: fixed;
    top: 44px;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    max-height: calc(100vh - 44px);
    background: var(--m-bg-content);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    display: none;
    flex-direction: column;
    overflow: hidden;
    z-index: 1001;
    border: 1px solid var(--m-border-light);
    border-radius: 0 0 8px 8px;
}
.search-dropdown.active {
    display: flex;
}

/********** Search Dropdown Body **********/
.search-dropdown-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    max-height: calc(100vh - 60px);
}

/********** Search Results (Two Columns) **********/
.ai-search-results {
    display: flex;
    gap: 1rem;
    flex: 1;
    overflow: hidden;
    padding: 1rem;
}

/********** Mobile Tabs (hidden on desktop) **********/
.ai-search-tabs {
    display: none;
}

.ai-search-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

.ai-search-column-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--m-text-primary);
    padding-bottom: 12px;
    border-bottom: 1px solid var(--f-white-c);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.ai-search-column-title i {
    color: var(--m-primary-color);
}

.ai-search-column-list {
    flex: 1;
    overflow-y: auto;
    padding: 20px 4px 4px 4px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/********** Search Item (Common) **********/
.ai-search-item {
    display: flex;
    gap: .75rem;
    padding: .75rem;
    background: var(--f-white);
    border-radius: .5rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
    align-items: center;
    min-height: 106px;
    overflow: hidden;
    box-sizing: border-box;
}

.ai-search-item:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    background-color: #f1f1f1;
}

.ai-search-poster {
    width: 120px;
    height: 90px;
    flex-shrink: 0;
    border-radius: .25rem;
    overflow: hidden;
    background: var(--f-white-c);
    position: relative;
}

.ai-search-poster img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: var(--f-white-c);
}

.ai-search-poster .js-home-poster-img {
    position: relative;
    z-index: 1;
    transition: opacity .18s ease;
    background: var(--f-white-c) url('/public/img/loading.svg') center center no-repeat;
    background-size: 80% auto;
}

.ai-search-poster .js-home-poster-img.is-loaded,
.ai-search-poster .js-home-poster-img.is-error {
    background-color: var(--f-white-c);
    background-image: none;
}

.ai-search-poster.is-loading .js-home-poster-img {
    opacity: 0;
}

.ai-search-poster.is-loading::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 2;
    background: var(--f-white-c) url('/public/img/loading.svg') center center no-repeat;
    background-size: 80% auto;
    pointer-events: none;
}

.ai-search-poster.is-loaded .js-home-poster-img {
    opacity: 1;
}

.ai-search-item-title {
    font-weight: 600;
    font-size: .9rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--m-text-primary);
}

.ai-search-item-summary {
    font-size: .8rem;
    color: var(--m-text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-top: .15rem;
    margin-bottom: .25rem;
    line-height: 1.4;
}

.ai-search-item-content {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.ai-search-item-meta {
    display: flex;
    gap: .75rem;
    font-size: .75rem;
    color: var(--f-black-9);
    margin-top: auto;
    flex-wrap: wrap;
}

.ai-search-item-meta i {
    margin-right: .2rem;
}

/********** Search Message (Loading / Error / Empty) **********/
.ai-search-msg,
.ai-search-empty {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 10px;
    justify-content: center;
    padding: 40px 20px;
    padding:1rem;
    color: var(--m-text-muted);
    font-size: 1rem;
}

.ai-search-empty {
    padding: 30px 20px;
}

/********** Mobile Responsive **********/
@media screen and (max-width: 767px) {
    .search-dropdown {
        width: 100%;
        left: 0;
        transform: none;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
    .search-dropdown-body {
        padding: 0;
        max-height: calc(100vh - 56px);
    }
    .ai-search-results {
        flex-direction: column;
        padding: .75rem;
        gap: 0;
    }
    /* Mobile tabs */
    .ai-search-tabs {
        display: flex;
        gap: 0;
        flex-shrink: 0;
        border-bottom: 1px solid var(--m-border-light);
        background: var(--m-bg-content);
    }
    .ai-search-tab {
        flex: 1;
        padding: .75rem;
        text-align: center;
        font-size: 13px;
        color: var(--m-text-secondary);
        cursor: pointer;
        border-bottom: 2px solid transparent;
        transition: all 0.2s;
    }
    .ai-search-tab.active {
        color: var(--m-primary-color);
        border-bottom-color: var(--m-primary-color);
        font-weight: 500;
    }
    .ai-search-tab i {
        margin-right: 4px;
    }
    /* Hide inactive columns */
    .ai-search-column {
        display: none;
        flex: 1;
        overflow: hidden;
    }
    .ai-search-column.active {
        display: flex;
    }
    /* Hide column titles on mobile (tabs show them) */
    .ai-search-column-title {
        display: none;
    }
    .ai-search-column-list {
        padding-top: 8px;
    }
    .ai-search-item {
        padding: .625rem;
        min-height: 88px;
        gap: .625rem;
    }
    .ai-search-poster {
        width: 92px;
        height: 68px;
    }
    .ai-search-item-meta {
        gap: .5rem;
    }
}

/********** Dark Theme **********/
:root[app-theme='dark'] {
    .search-dropdown {
        border-color: var(--m-border-color);
        box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
    }
    .ai-search-item {
        background: var(--f-black-2);
        box-shadow: 0 1px 3px rgba(0,0,0,.2);
    }
    .ai-search-item:hover {
        background: var(--f-black-3);
        box-shadow: 0 2px 8px rgba(0,0,0,0.4);
    }
    .ai-search-poster,
    .ai-search-poster img {
        background-color: var(--f-black-5);
    }
    .ai-search-poster .js-home-poster-img {
        background-color: var(--f-black-5);
    }
    .ai-search-poster .js-home-poster-img.is-loaded,
    .ai-search-poster .js-home-poster-img.is-error {
        background-color: var(--f-black-5);
    }
    .ai-search-poster.is-loading::after {
        background-color: var(--f-black-5);
    }
}