/* ==========================================================================
   BrainerBot — Home Page
   Sticky search → scrollable hero carousel → categories chip → product grid
   ========================================================================== */

/* ------- Search bar -------------------------------------------------------- */
.bb-searchbar-wrap {
    position: sticky;
    top: var(--bb-nav-top);
    z-index: 30;
    padding: 12px 16px;
    background: rgba(250, 250, 249, .9);
    backdrop-filter: saturate(140%) blur(10px);
    -webkit-backdrop-filter: saturate(140%) blur(10px);
    border-bottom: 1px solid var(--bb-border);
}
@media (min-width: 768px) {
    .bb-searchbar-wrap { padding: 20px 24px; }
}

.bb-searchbar {
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bb-surface);
    border: 1px solid var(--bb-border);
    border-radius: 999px;
    padding: 10px 16px;
    box-shadow: var(--bb-shadow-sm);
    transition: border-color .2s ease, box-shadow .2s ease;
}
.bb-searchbar:focus-within {
    border-color: var(--bb-primary);
    box-shadow: 0 0 0 4px var(--bb-ring);
}
.bb-searchbar svg { flex-shrink: 0; color: var(--bb-text-muted); }
.bb-searchbar input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font: inherit;
    color: var(--bb-text);
    min-width: 0;
}
.bb-searchbar input::placeholder { color: var(--bb-text-faint); }

/* ------- Hero (split: copy left, promo right) ------------------------------ */
.bb-hero-split {
    padding: 24px 0 16px;
}
@media (min-width: 768px) {
    .bb-hero-split { padding: 48px 0 24px; }
}
.bb-hero-split-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    align-items: center;
}
@media (min-width: 768px) {
    .bb-hero-split-inner { padding: 0 24px; grid-template-columns: 1fr 1fr; gap: 40px; }
}

.bb-hero-copy { max-width: 520px; margin: 0 auto; text-align: center; }
@media (min-width: 768px) {
    .bb-hero-copy { margin: 0; text-align: left; }
}
.bb-hero-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--bb-primary-soft);
    color: var(--bb-primary);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 14px;
    border: 1px solid var(--bb-primary-soft-2);
}
.bb-hero-headline {
    font-family: var(--bb-font-display);
    font-weight: 500;
    font-size: clamp(1.7rem, 3.2vw, 2.5rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin: 0 0 12px;
    color: var(--bb-text);
}
.bb-hero-headline em { color: var(--bb-primary); font-style: italic; }
.bb-hero-lede {
    font-size: 15px;
    line-height: 1.65;
    color: var(--bb-text-muted);
    margin: 0 0 22px;
}
.bb-hero-cta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}
@media (min-width: 768px) { .bb-hero-cta { justify-content: flex-start; } }

.bb-hero-promo {
    position: relative;
    display: block;
    width: 100%;
    aspect-ratio: 16 / 10;
    border-radius: var(--bb-radius-lg);
    overflow: hidden;
    background: #000;
    box-shadow: var(--bb-shadow-lg);
    transition: transform .25s ease;
}
.bb-hero-promo:hover { transform: translateY(-2px); }
.bb-hero-promo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}
.bb-hero-promo:hover img { transform: scale(1.03); }
.bb-hero-promo-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    background: var(--bb-primary);
    color: #fff;
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
}
.bb-hero-promo-caption {
    position: absolute;
    inset: auto 0 0 0;
    padding: 44px 16px 16px;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, .72) 100%);
    color: #fff;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 12px;
}
.bb-hero-promo-title {
    font-family: var(--bb-font-display);
    font-weight: 500;
    font-size: 15px;
    letter-spacing: -0.01em;
}
.bb-hero-promo-price {
    background: #fff;
    color: var(--bb-text);
    padding: 5px 12px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 13px;
}

/* ------- Trust bar --------------------------------------------------------- */
.bb-trust {
    padding: 16px 0 8px;
}
.bb-trust-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}
@media (min-width: 768px) { .bb-trust-inner { padding: 0 24px; } }
.bb-trust-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--bb-text-muted);
    white-space: nowrap;
}
.bb-trust-icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--bb-primary-soft);
    color: var(--bb-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
@media (max-width: 767.98px) {
    .bb-trust-inner {
        justify-content: flex-start;
        flex-wrap: nowrap;
        overflow-x: auto;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
    }
    .bb-trust-inner::-webkit-scrollbar { display: none; }
    .bb-trust-item { font-size: 12px; }
}

/* ------- Category chips ---------------------------------------------------- */
.bb-section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding: 24px 16px 12px;
}
@media (min-width: 768px) {
    .bb-section-head { padding: 32px 24px 16px; max-width: 1200px; margin: 0 auto; }
}
.bb-section-head h2 {
    font-family: var(--bb-font-display);
    font-size: 24px;
    margin: 0;
}
.bb-section-head .bb-section-more {
    font-size: 13px;
    color: var(--bb-primary);
    font-weight: 500;
}

.bb-chips {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 4px 16px 16px;
    scrollbar-width: none;
}
.bb-chips::-webkit-scrollbar { display: none; }
@media (min-width: 768px) {
    .bb-chips { padding: 4px 24px 20px; max-width: 1200px; margin: 0 auto; justify-content: flex-start; flex-wrap: wrap; }
}
.bb-chip {
    flex-shrink: 0;
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--bb-surface);
    border: 1px solid var(--bb-border);
    color: var(--bb-text-muted);
    font-size: 13px;
    font-weight: 500;
    transition: all .15s ease;
    cursor: pointer;
}
.bb-chip:hover { border-color: var(--bb-primary); color: var(--bb-primary); }
.bb-chip.is-active {
    background: var(--bb-primary);
    border-color: var(--bb-primary);
    color: #fff;
}

/* ------- Product grid ------------------------------------------------------ */
.bb-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 4px 16px 32px;
}
@media (min-width: 560px) { .bb-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 768px) {
    .bb-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 18px;
        padding: 4px 24px 48px;
        max-width: 1200px;
        margin: 0 auto;
    }
}
@media (min-width: 1024px) { .bb-grid { grid-template-columns: repeat(5, 1fr); } }

.bb-card {
    background: var(--bb-surface);
    border: 1px solid var(--bb-border);
    border-radius: var(--bb-radius);
    overflow: hidden;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    display: flex;
    flex-direction: column;
    color: var(--bb-text);
}
.bb-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--bb-shadow);
    border-color: var(--bb-border-strong);
}
.bb-card-media {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: var(--bb-surface-2);
}
.bb-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .3s ease;
}
.bb-card:hover .bb-card-media img { transform: scale(1.04); }

.bb-card-body {
    padding: 10px 12px 12px;
    flex: 1;
}
.bb-card-cta {
    display: block;
    padding: 10px 12px;
    text-align: center;
    font-size: 13px;
    font-weight: 700;
    color: var(--bb-primary);
    background: var(--bb-primary-soft);
    border-top: 1px solid var(--bb-border);
    letter-spacing: .04em;
    transition: background .2s ease, color .2s ease;
    margin-top: auto;
}
.bb-card:hover .bb-card-cta {
    background: var(--bb-primary);
    color: #fff;
}
.bb-card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--bb-text);
    margin: 0 0 4px;
    line-height: 1.25;
}
.bb-card-sub {
    font-size: 12px;
    color: var(--bb-text-muted);
    margin: 0 0 8px;
    line-height: 1.3;
}
.bb-card-price {
    font-family: var(--bb-font-display);
    font-weight: 500;
    color: var(--bb-primary);
    font-size: 15px;
    display: flex;
    align-items: baseline;
    gap: 6px;
}
.bb-card-price .bb-card-from {
    font-family: var(--bb-font-body);
    font-size: 11px;
    font-weight: 400;
    color: var(--bb-text-faint);
    text-transform: uppercase;
    letter-spacing: .05em;
}
.bb-card-price .bb-card-per {
    font-family: var(--bb-font-body);
    font-size: 12px;
    font-weight: 500;
    color: var(--bb-text-muted);
}

/* ------- About section ----------------------------------------------------- */
.bb-about {
    padding: 32px 0 24px;
}
@media (min-width: 768px) { .bb-about { padding: 56px 0 40px; } }
.bb-about-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    align-items: start;
}
@media (min-width: 768px) {
    .bb-about-inner {
        padding: 0 24px;
        grid-template-columns: 1fr 1.4fr;
        gap: 56px;
    }
}
.bb-about-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--bb-primary);
    margin-bottom: 10px;
}
.bb-about-title {
    font-family: var(--bb-font-display);
    font-weight: 500;
    font-size: clamp(1.6rem, 2.8vw, 2.2rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin: 0 0 10px;
    color: var(--bb-text);
}
.bb-about-title em { color: var(--bb-primary); font-style: italic; }
.bb-about-sub {
    font-size: 14px;
    color: var(--bb-text-muted);
    line-height: 1.6;
    margin: 0;
    max-width: 360px;
}
.bb-about-prose {
    background: var(--bb-surface-tint);
    border: 1px solid var(--bb-border);
    border-radius: var(--bb-radius-lg);
    padding: 24px;
    color: var(--bb-text-muted);
    font-size: 15px;
    line-height: 1.7;
    box-shadow: var(--bb-shadow-sm);
}
.bb-about-prose p { margin: 0; }
.bb-about-prose p + p { margin-top: 12px; }
.bb-about-prose strong { color: var(--bb-text); font-weight: 600; }

/* ------- FAQ section ------------------------------------------------------- */
.bb-faq {
    padding: 16px 0 40px;
}
@media (min-width: 768px) { .bb-faq { padding: 24px 0 64px; } }
.bb-faq-inner { max-width: 880px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 768px) { .bb-faq-inner { padding: 0 24px; } }
.bb-faq-head { text-align: center; margin-bottom: 22px; }
@media (min-width: 768px) { .bb-faq-head { margin-bottom: 32px; } }
.bb-faq-head h2 {
    font-family: var(--bb-font-display);
    font-weight: 500;
    font-size: clamp(1.6rem, 2.6vw, 2rem);
    letter-spacing: -0.02em;
    margin: 0 0 6px;
    color: var(--bb-text);
}
.bb-faq-head p {
    color: var(--bb-text-muted);
    font-size: 14px;
    margin: 0;
}

.bb-faq-item {
    background: var(--bb-surface);
    border: 1px solid var(--bb-border);
    border-left: 3px solid var(--bb-primary-soft-2);
    border-radius: var(--bb-radius);
    margin-bottom: 10px;
    overflow: hidden;
    transition: border-color .2s ease, box-shadow .2s ease;
}
.bb-faq-item:hover { border-color: var(--bb-border-strong); }
.bb-faq-item[open] {
    border-left-color: var(--bb-primary);
    box-shadow: var(--bb-shadow);
}
.bb-faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    font-weight: 600;
    font-size: 15px;
    color: var(--bb-text);
    cursor: pointer;
    list-style: none;
}
.bb-faq-item summary::-webkit-details-marker { display: none; }
.bb-faq-item summary::marker { content: ''; }
.bb-faq-chevron {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--bb-primary-soft);
    color: var(--bb-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform .3s ease, background .2s ease, color .2s ease;
}
.bb-faq-item[open] .bb-faq-chevron {
    transform: rotate(180deg);
    background: var(--bb-primary);
    color: #fff;
}
.bb-faq-body {
    padding: 0 20px 18px;
    color: var(--bb-text-muted);
    font-size: 14px;
    line-height: 1.7;
}
.bb-faq-body p { margin: 0; }
.bb-faq-body p + p { margin-top: 8px; }
.bb-faq-body a {
    color: var(--bb-primary);
    font-weight: 600;
    border-bottom: 1px solid var(--bb-primary-soft-2);
    transition: border-color .2s ease;
}
.bb-faq-body a:hover { border-bottom-color: var(--bb-primary); }
.bb-faq-body strong { color: var(--bb-text); font-weight: 600; }

/* ------- Footer ------------------------------------------------------------ */
.bb-footer {
    background: var(--bb-primary-soft);
    border-top: 1px solid var(--bb-primary-soft-2);
    padding: 40px 0 24px;
    margin-top: 16px;
}
@media (min-width: 768px) { .bb-footer { padding: 56px 0 32px; } }
.bb-footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 768px) { .bb-footer-inner { padding: 0 24px; } }
.bb-footer-top {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--bb-primary-soft-2);
}
@media (min-width: 640px) {
    .bb-footer-top { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 768px) {
    .bb-footer-top {
        grid-template-columns: 2fr 1fr 1fr;
        gap: 48px;
    }
}
.bb-footer-brand { grid-column: 1 / -1; }
@media (min-width: 768px) { .bb-footer-brand { grid-column: auto; } }

.bb-footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--bb-font-display);
    font-size: 22px;
    font-weight: 600;
    color: var(--bb-text);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}
.bb-footer-logo em { font-style: italic; color: var(--bb-primary); font-weight: 500; }
.bb-footer-tagline {
    color: var(--bb-text-muted);
    font-size: 14px;
    line-height: 1.65;
    max-width: 380px;
    margin: 0;
}
.bb-footer-col h4 {
    font-family: var(--bb-font-body);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--bb-primary);
    margin: 0 0 14px;
}
.bb-footer-col a {
    display: block;
    font-size: 14px;
    color: var(--bb-text-muted);
    padding: 5px 0;
    transition: color .2s ease, transform .2s ease;
}
.bb-footer-col a:hover {
    color: var(--bb-primary);
    transform: translateX(2px);
}
.bb-footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 20px;
    gap: 16px;
    flex-wrap: wrap;
}
.bb-footer-bottom small {
    color: var(--bb-text-faint);
    font-size: 13px;
}
.bb-footer-legal {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.bb-footer-legal a {
    font-size: 13px;
    color: var(--bb-text-faint);
    transition: color .2s ease;
}
.bb-footer-legal a:hover { color: var(--bb-primary); }

/* ==========================================================================
   Hero carousel (auto-scroll + swipable) — lives in the hero right column
   ========================================================================== */
.bb-hero-carousel {
    position: relative;
    width: 100%;
}
.bb-banner-track {
    display: flex;
    gap: 0;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    border-radius: var(--bb-radius-lg);
}
.bb-banner-track::-webkit-scrollbar { display: none; }
.bb-banner-slide {
    flex: 0 0 100%;
    scroll-snap-align: center;
    scroll-snap-stop: always;
    display: block;
    border-radius: var(--bb-radius-lg);
    overflow: hidden;
    box-shadow: var(--bb-shadow-lg);
    aspect-ratio: 16 / 10;
    background: var(--bb-surface-2);
    transition: transform .2s ease;
}
.bb-banner-slide:hover { transform: translateY(-2px); }
.bb-banner-slide img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.bb-banner-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 12px;
}
.bb-banner-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: none;
    padding: 0;
    background: var(--bb-border-strong, #d6d3d1);
    cursor: pointer;
    transition: background .2s ease, transform .2s ease, width .2s ease;
}
.bb-banner-dot.is-active {
    background: var(--bb-primary);
    width: 22px;
    border-radius: 999px;
}
.bb-banner-dot:hover:not(.is-active) { background: var(--bb-text-muted); }