/**
 * FAQLab - Frontend Accordion Styles
 * (C) 2026 The Design Company. All rights reserved.
 *
 * CSS custom properties set via inline style on .faqlab:
 *   --faqlab-heading-bg, --faqlab-heading-text, --faqlab-heading-hover,
 *   --faqlab-accent, --faqlab-radius
 */

/* ============================================================
   Base Container
   ============================================================ */

.faqlab {
    --_bg: var(--faqlab-heading-bg, #f8f9fa);
    --_text: var(--faqlab-heading-text, #1e293b);
    --_hover: var(--faqlab-heading-hover, #e2e8f0);
    --_accent: var(--faqlab-accent, #2563eb);
    --_radius: var(--faqlab-radius, 8px);

    font-family: inherit;
    line-height: 1.6;
    max-width: 900px;
    margin: 0 auto;
}

/* ============================================================
   Header & Description
   ============================================================ */

.faqlab-header {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.faqlab-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--_text);
    margin: 0;
}

.faqlab-count {
    font-size: 0.85rem;
    color: #64748b;
    white-space: nowrap;
}

.faqlab-subtitle {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--_text);
    margin: 0;
}

.faqlab-description {
    color: #475569;
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
}

/* ============================================================
   Search
   ============================================================ */

.faqlab-search {
    margin-bottom: 1.25rem;
}

.faqlab-search-input {
    width: 100%;
    padding: 0.625rem 1rem;
    border: 1px solid #cbd5e1;
    border-radius: var(--_radius);
    font-size: 0.95rem;
    color: var(--_text);
    background: #fff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    box-sizing: border-box;
}

.faqlab-search-input:focus {
    outline: none;
    border-color: var(--_accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--_accent) 20%, transparent);
}

/* ============================================================
   Accordion
   ============================================================ */

.faqlab-accordion {
    list-style: none;
    margin: 0;
    padding: 0;
}

.faqlab-item {
    border: 1px solid #e2e8f0;
    border-radius: var(--_radius);
    margin-bottom: 0.5rem;
    overflow: hidden;
    transition: box-shadow 0.2s ease;
}

.faqlab-item:hover {
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.faqlab-item.is-active {
    border-color: var(--_accent);
}

.faqlab-item[hidden] {
    display: none;
}

/* Question / Trigger */

.faqlab-question {
    margin: 0;
    font-size: 1rem;
}

.faqlab-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.875rem 1.125rem;
    border: none;
    background: var(--_bg);
    color: var(--_text);
    font: inherit;
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    gap: 1rem;
    transition: background-color 0.2s ease;
}

.faqlab-trigger:hover,
.faqlab-trigger:focus-visible {
    background: var(--_hover);
}

.faqlab-trigger[aria-expanded="true"] {
    color: var(--_accent);
    border-bottom: 1px solid #e2e8f0;
}

.faqlab-trigger:focus-visible {
    outline: 2px solid var(--_accent);
    outline-offset: -2px;
}

/* Icon — Chevron (default) */

.faqlab-icon {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    position: relative;
    transition: transform 0.25s ease;
}

/* Chevron via CSS borders */
[data-icon-style="chevron"] .faqlab-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0.5rem;
    height: 0.5rem;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translate(-50%, -65%) rotate(45deg);
    transition: transform 0.25s ease;
}

[data-icon-style="chevron"] .faqlab-trigger[aria-expanded="true"] .faqlab-icon::before {
    transform: translate(-50%, -35%) rotate(-135deg);
}

/* Plus/Minus icon */
[data-icon-style="plusminus"] .faqlab-icon::before,
[data-icon-style="plusminus"] .faqlab-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    background: currentColor;
    transition: transform 0.25s ease;
}

[data-icon-style="plusminus"] .faqlab-icon::before {
    width: 0.875rem;
    height: 2px;
    transform: translate(-50%, -50%);
}

[data-icon-style="plusminus"] .faqlab-icon::after {
    width: 2px;
    height: 0.875rem;
    transform: translate(-50%, -50%);
}

[data-icon-style="plusminus"] .faqlab-trigger[aria-expanded="true"] .faqlab-icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
    opacity: 0;
}

/* No icon */
[data-icon-style="none"] .faqlab-icon {
    display: none;
}

/* Answer panel */

.faqlab-answer {
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.2s ease;
    max-height: 0;
    opacity: 0;
}

.faqlab-answer[hidden] {
    display: block; /* Override hidden so transitions work */
    max-height: 0;
    opacity: 0;
    visibility: hidden;
}

.faqlab-answer.is-open {
    visibility: visible;
    opacity: 1;
}

.faqlab-answer-inner {
    padding: 1rem 1.125rem 1.25rem;
    color: #334155;
    font-size: 0.95rem;
    line-height: 1.7;
}

.faqlab-answer-inner p:first-child {
    margin-top: 0;
}

.faqlab-answer-inner p:last-child {
    margin-bottom: 0;
}

/* ============================================================
   Flat List Layout
   ============================================================ */

.faqlab-flat-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.faqlab-flat-item {
    border-bottom: 1px solid #e2e8f0;
    padding: 1.25rem 0;
}

.faqlab-flat-item:first-child {
    padding-top: 0;
}

.faqlab-flat-item:last-child {
    border-bottom: none;
}

.faqlab-flat-item[hidden] {
    display: none;
}

.faqlab-flat-question {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--_text);
    margin: 0 0 0.5rem;
}

.faqlab-flat-answer {
    color: #334155;
    font-size: 0.95rem;
    line-height: 1.7;
}

.faqlab-flat-answer p:first-child {
    margin-top: 0;
}

.faqlab-flat-answer p:last-child {
    margin-bottom: 0;
}

/* ============================================================
   Category Listing (cards)
   ============================================================ */

.faqlab-categories {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.faqlab-category-card {
    display: block;
    padding: 1.25rem 1.5rem;
    border: 1px solid #e2e8f0;
    border-radius: var(--_radius);
    background: var(--_bg);
    text-decoration: none;
    color: var(--_text);
    transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.faqlab-category-card:hover {
    border-color: var(--_accent);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-1px);
}

.faqlab-category-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 0.25rem;
    color: var(--_text);
}

.faqlab-category-card:hover .faqlab-category-card-title {
    color: var(--_accent);
}

.faqlab-category-card-desc {
    font-size: 0.875rem;
    color: #64748b;
    margin: 0 0 0.5rem;
    line-height: 1.5;
}

.faqlab-category-card-count {
    font-size: 0.8rem;
    color: #94a3b8;
}

/* ============================================================
   Category Groups (all-FAQs mode)
   ============================================================ */

.faqlab-category-group {
    margin-bottom: 2rem;
}

.faqlab-category-group:last-child {
    margin-bottom: 0;
}

/* ============================================================
   Empty & Notice states
   ============================================================ */

.faqlab-empty,
.faqlab-notice p {
    color: #64748b;
    font-style: italic;
    padding: 1rem 0;
}

.faqlab-no-results[hidden] {
    display: none;
}

.faqlab-no-results p {
    color: #64748b;
    font-style: italic;
    padding: 1rem 0;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 640px) {
    .faqlab-title {
        font-size: 1.25rem;
    }

    .faqlab-header {
        flex-direction: column;
        gap: 0.25rem;
    }

    .faqlab-trigger {
        padding: 0.75rem 0.875rem;
        font-size: 0.925rem;
    }

    .faqlab-answer-inner {
        padding: 0.75rem 0.875rem 1rem;
    }

    .faqlab-categories {
        grid-template-columns: 1fr;
    }
}