/* ====================================================
   FindBrief Advanced Search — Frontend Styles
   ==================================================== */

/* CSS Variables (overridden per-instance via inline style) */
.fbs-wrapper {
    --fbs-accent: #0073e6;
    --fbs-accent-hover: #005bb5;
    --fbs-radius: 12px;
    --fbs-shadow: 0 2px 12px rgba(0,0,0,.08);
    --fbs-border: #e2e8f0;
    --fbs-bg: #fff;
    --fbs-text: #1e293b;
    --fbs-muted: #64748b;
    --fbs-tag-bg: #f1f5f9;
    --fbs-highlight: rgba(255, 229, 60, 0.45);
    font-family: inherit;
    width: 100%;
    box-sizing: border-box;
}

*, *::before, *::after {
    box-sizing: inherit;
}

/* ── Search Bar ─────────────────────────────────── */
.fbs-search-bar {
    display: flex;
    align-items: center;
    gap: 0;
    background: var(--fbs-bg);
    border: 2px solid var(--fbs-border);
    border-radius: calc(var(--fbs-radius) + 4px);
    overflow: hidden;
    transition: border-color .2s, box-shadow .2s;
}

.fbs-search-bar:focus-within {
    border-color: var(--fbs-accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--fbs-accent) 15%, transparent);
}

/* Category Dropdown */
.fbs-cat-dropdown {
    position: relative;
    flex-shrink: 0;
    border-right: 1px solid var(--fbs-border);
}

.fbs-cat-select {
    appearance: none;
    -webkit-appearance: none;
    background: transparent;
    border: none;
    padding: 0 36px 0 16px;
    height: 52px;
    font-size: 14px;
    font-weight: 500;
    color: var(--fbs-text);
    cursor: pointer;
    outline: none;
    min-width: 160px;
    max-width: 200px;
}

.fbs-cat-select:focus {
    outline: none;
}

.fbs-cat-arrow {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--fbs-muted);
    pointer-events: none;
    display: flex;
    align-items: center;
}

/* Input */
.fbs-input-wrap {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
}

.fbs-input {
    width: 100%;
    border: none;
    padding: 0 40px 0 16px;
    height: 52px;
    font-size: 15px;
    color: var(--fbs-text);
    background: transparent;
    outline: none;
}

.fbs-input::placeholder {
    color: var(--fbs-muted);
}

.fbs-clear-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--fbs-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 4px;
    border-radius: 50%;
    transition: color .15s, background .15s;
}

.fbs-clear-btn:hover {
    color: var(--fbs-text);
    background: var(--fbs-tag-bg);
}

/* Search Button */
.fbs-search-btn {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--fbs-accent);
    color: #fff;
    border: none;
    padding: 0 22px;
    height: 52px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background .18s;
    white-space: nowrap;
}

.fbs-search-btn:hover {
    background: color-mix(in srgb, var(--fbs-accent) 85%, #000);
}

.fbs-search-btn:active {
    background: color-mix(in srgb, var(--fbs-accent) 70%, #000);
}

.fbs-btn-icon {
    flex-shrink: 0;
}

/* ── Tabs Bar ───────────────────────────────────── */
.fbs-tabs-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 12px;
    gap: 12px;
    flex-wrap: wrap;
}

.fbs-tabs {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.fbs-tab {
    background: transparent;
    border: 1px solid var(--fbs-border);
    border-radius: 999px;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--fbs-muted);
    cursor: pointer;
    transition: background .15s, color .15s, border-color .15s;
}

.fbs-tab:hover {
    background: var(--fbs-tag-bg);
    color: var(--fbs-text);
}

.fbs-tab.fbs-tab--active {
    background: var(--fbs-accent);
    border-color: var(--fbs-accent);
    color: #fff;
}

.fbs-result-count {
    font-size: 13px;
    color: var(--fbs-muted);
    white-space: nowrap;
}

/* ── Results Area ───────────────────────────────── */
.fbs-results-area {
    margin-top: 20px;
}

/* Spinner */
.fbs-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 40px 0;
    color: var(--fbs-muted);
    font-size: 13px;
}

.fbs-spin-ring {
    width: 36px;
    height: 36px;
    border: 3px solid var(--fbs-border);
    border-top-color: var(--fbs-accent);
    border-radius: 50%;
    animation: fbs-spin .7s linear infinite;
}

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

/* No results */
.fbs-no-results {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 48px 0;
    color: var(--fbs-muted);
    text-align: center;
}

.fbs-no-results p {
    margin: 0;
    font-size: 15px;
}

/* ── Grid Layout ────────────────────────────────── */
.fbs-results.fbs-layout-grid {
    display: grid;
    gap: 20px;
}

.fbs-results.fbs-layout-grid.fbs-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.fbs-results.fbs-layout-grid.fbs-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

/* ====================================================
   Responsive — Tablet Landscape (≤1024px)
   ==================================================== */
@media (max-width: 1024px) {
    .fbs-results.fbs-layout-grid {
        gap: 16px;
    }
}

/* ====================================================
   Responsive — Tablet Portrait (≤768px)
   ==================================================== */
@media (max-width: 768px) {
    .fbs-results.fbs-layout-grid.fbs-cols-3,
    .fbs-results.fbs-layout-grid.fbs-cols-2 {
        grid-template-columns: repeat(2, 1fr);
    }

    .fbs-cat-select {
        min-width: 130px;
        max-width: 170px;
    }

    .fbs-layout-list .fbs-card-thumb-wrap {
        width: 120px;
    }
}

/* ====================================================
   Responsive — Mobile (≤480px)
   ==================================================== */
@media (max-width: 480px) {

    /* Single column results */
    .fbs-results.fbs-layout-grid.fbs-cols-3,
    .fbs-results.fbs-layout-grid.fbs-cols-2 {
        grid-template-columns: 1fr;
    }
    .fbs-results.fbs-layout-grid {
        gap: 14px;
    }

    /* Stack the search bar: category row, then input + button row */
    .fbs-search-bar {
        flex-wrap: wrap;
    }

    .fbs-cat-dropdown {
        width: 100%;
        flex-basis: 100%;
        border-right: none;
        border-bottom: 1px solid var(--fbs-border);
    }

    .fbs-cat-select {
        width: 100%;
        min-width: 0;
        max-width: none;
        text-overflow: ellipsis;
        white-space: nowrap;
        overflow: hidden;
    }

    .fbs-input-wrap {
        flex: 1 1 auto;
        min-width: 0;
    }

    .fbs-input {
        height: 48px;
        font-size: 16px; /* prevents iOS auto-zoom on focus */
    }

    .fbs-search-btn {
        flex-shrink: 0;
        height: 48px;
        padding: 0 18px;
    }

    /* Tabs bar: let count drop below tabs cleanly */
    .fbs-tabs-bar {
        justify-content: flex-start;
    }
    .fbs-result-count {
        flex-basis: 100%;
    }

    /* List layout becomes stacked cards on small screens */
    .fbs-layout-list .fbs-card-item {
        flex-direction: column;
    }
    .fbs-layout-list .fbs-card-thumb-wrap {
        width: 100%;
        aspect-ratio: 16/9;
    }
    .fbs-layout-list .fbs-card-thumb,
    .fbs-layout-list .fbs-card-thumb-placeholder {
        height: 100%;
    }

    .fbs-card-body {
        padding: 12px 14px 14px;
    }
    .fbs-card-title {
        font-size: 14px;
    }
    .fbs-card-excerpt {
        font-size: 12.5px;
    }
}

/* ====================================================
   Responsive — Small phones (≤360px)
   ==================================================== */
@media (max-width: 360px) {
    .fbs-search-btn span {
        display: none; /* icon only when truly tight */
    }
    .fbs-search-btn {
        padding: 0 14px;
    }
}

/* ── List Layout ────────────────────────────────── */
.fbs-results.fbs-layout-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* ── Card ───────────────────────────────────────── */
.fbs-card-item {
    background: var(--fbs-bg);
    border: 1px solid var(--fbs-border);
    border-radius: var(--fbs-radius);
    overflow: hidden;
    transition: box-shadow .2s, transform .15s;
    display: flex;
    flex-direction: column;
}

.fbs-card-item:hover {
    box-shadow: var(--fbs-shadow);
    transform: translateY(-2px);
}

/* Grid card thumbnail */
.fbs-layout-grid .fbs-card-thumb {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    display: block;
}

.fbs-layout-grid .fbs-card-thumb-placeholder {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #cbd5e1;
    font-size: 32px;
}

/* List card */
.fbs-layout-list .fbs-card-item {
    flex-direction: row;
    align-items: stretch;
}

.fbs-layout-list .fbs-card-thumb-wrap {
    flex-shrink: 0;
    width: 160px;
}

.fbs-layout-list .fbs-card-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.fbs-layout-list .fbs-card-thumb-placeholder {
    width: 100%;
    height: 100%;
    min-height: 100px;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #cbd5e1;
    font-size: 28px;
}

/* Card Body */
.fbs-card-body {
    padding: 14px 16px 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.fbs-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.fbs-cat-badge {
    display: inline-block;
    background: color-mix(in srgb, var(--fbs-accent) 12%, transparent);
    color: var(--fbs-accent);
    border-radius: 4px;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 600;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: .5px;
}

.fbs-cat-badge:hover {
    background: color-mix(in srgb, var(--fbs-accent) 20%, transparent);
}

.fbs-post-date {
    font-size: 11px;
    color: var(--fbs-muted);
}

.fbs-card-title {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
}

.fbs-card-title a {
    color: var(--fbs-text);
    text-decoration: none;
}

.fbs-card-title a:hover {
    color: var(--fbs-accent);
}

.fbs-card-excerpt {
    margin: 0;
    font-size: 13px;
    color: var(--fbs-muted);
    line-height: 1.5;
    flex: 1;
}

.fbs-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 4px;
}

.fbs-tag-link {
    display: inline-block;
    background: var(--fbs-tag-bg);
    color: var(--fbs-muted);
    border-radius: 4px;
    padding: 2px 8px;
    font-size: 11px;
    text-decoration: none;
    transition: background .15s, color .15s;
}

.fbs-tag-link:hover {
    background: color-mix(in srgb, var(--fbs-accent) 15%, transparent);
    color: var(--fbs-accent);
}

/* Highlight */
.fbs-highlight {
    background: var(--fbs-highlight);
    border-radius: 2px;
    padding: 0 2px;
}

/* ── Load More ──────────────────────────────────── */
.fbs-load-more-wrap {
    display: flex;
    justify-content: center;
    margin-top: 24px;
}

.fbs-load-more {
    background: transparent;
    border: 2px solid var(--fbs-accent);
    color: var(--fbs-accent);
    border-radius: 999px;
    padding: 10px 32px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background .18s, color .18s;
}

.fbs-load-more:hover {
    background: var(--fbs-accent);
    color: #fff;
}

/* ── Entry animation ────────────────────────────── */
.fbs-card-item {
    animation: fbs-fadeup .3s ease both;
}

@keyframes fbs-fadeup {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Stagger */
.fbs-card-item:nth-child(1) { animation-delay: .03s; }
.fbs-card-item:nth-child(2) { animation-delay: .06s; }
.fbs-card-item:nth-child(3) { animation-delay: .09s; }
.fbs-card-item:nth-child(4) { animation-delay: .12s; }
.fbs-card-item:nth-child(5) { animation-delay: .15s; }
.fbs-card-item:nth-child(6) { animation-delay: .18s; }