/* ============================================================
   bitter-sweet.ai — Design System v2
   Soft, elegant, minimal — warm academic portal
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=DM+Serif+Display&display=swap');

:root {
    /* Backgrounds — almost no contrast between page and cards */
    --bs-bg:            #FAFAF9;
    --bs-surface:       #FFFFFF;
    --bs-surface-alt:   #F5F5F3;

    /* Text — softer, not harsh */
    --bs-text:          #2C2C2C;
    --bs-text-secondary:#5A5A5A;
    --bs-text-tertiary: #8A8A8A;
    --bs-text-faint:    #B0B0B0;

    /* Accent — muted teal, not neon */
    --bs-accent:        #3D8B80;
    --bs-accent-hover:  #2E6F66;
    --bs-accent-soft:   #EBF5F3;

    /* Warm — gentle amber */
    --bs-warm:          #C28422;
    --bs-warm-soft:     #FDF6E8;

    /* Rose — subtle */
    --bs-rose:          #C25F6A;
    --bs-rose-soft:     #FDF0F1;

    /* UI */
    --bs-border:        rgba(0,0,0,0.06);
    --bs-border-strong: rgba(0,0,0,0.10);
    --bs-radius:        10px;
    --bs-radius-lg:     14px;
    --bs-radius-pill:   999px;
    --bs-shadow-xs:     0 1px 2px rgba(0,0,0,0.04);
    --bs-shadow:        0 2px 8px rgba(0,0,0,0.06);
    --bs-shadow-hover:  0 4px 16px rgba(0,0,0,0.08);

    /* Typography */
    --bs-font:          'DM Sans', system-ui, -apple-system, sans-serif;
    --bs-font-display:  'DM Serif Display', Georgia, 'Times New Roman', serif;

    /* Layout */
    --bs-max-w:         1080px;
    --bs-gutter:        1.5rem;

    --bs-transition:    0.2s ease;
}


/* --- RESET --- */

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

html, body { margin: 0; padding: 0; }

html {
    height: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--bs-font);
    font-size: 0.9375rem;
    line-height: 1.65;
    color: var(--bs-text);
    background: var(--bs-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }

a {
    color: var(--bs-accent);
    text-decoration: none;
    transition: color var(--bs-transition);
}
a:hover { color: var(--bs-accent-hover); }

/* --- TYPOGRAPHY — clear hierarchy --- */

h1, h2, h3, h4 {
    font-family: var(--bs-font-display);
    font-weight: 400;
    color: var(--bs-text);
    margin: 0 0 0.5rem;
    letter-spacing: -0.01em;
}

h1 {
    font-size: 2.4rem;
    line-height: 1.15;
}

h2 {
    font-size: 1.5rem;
    line-height: 1.25;
}

h3 {
    font-family: var(--bs-font);
    font-weight: 600;
    font-size: 1.05rem;
    line-height: 1.4;
}

p { margin: 0 0 1rem; }


/* --- SVG ICONS --- */

svg.bs-icon {
    width: 20px; height: 20px;
    min-width: 20px; min-height: 20px;
    max-width: 20px; max-height: 20px;
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
    overflow: hidden;
}

svg.bs-icon-sm {
    width: 16px !important; height: 16px !important;
    min-width: 16px; min-height: 16px;
    max-width: 16px; max-height: 16px;
}

svg.bs-icon-lg {
    width: 24px !important; height: 24px !important;
    min-width: 24px; min-height: 24px;
    max-width: 24px; max-height: 24px;
}


/* --- CONTAINER --- */

.bs-container {
    max-width: var(--bs-max-w);
    margin: 0 auto;
    padding: 0 var(--bs-gutter);
}


/* ==========================================================
   HEADER
   ========================================================== */

.bs-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(250, 250, 249, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--bs-border);
}

.bs-header-inner {
    max-width: var(--bs-max-w);
    margin: 0 auto;
    padding: 0 var(--bs-gutter);
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

/* Logo */
.bs-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    text-decoration: none;
    color: var(--bs-text);
    flex-shrink: 0;
}
.bs-logo:hover { color: var(--bs-text); }

.bs-logo-mark {
    width: 24px; height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--bs-accent) 0%, var(--bs-warm) 70%, var(--bs-rose) 100%);
    opacity: 0.85;
    flex-shrink: 0;
}

.bs-logo-text {
    font-family: var(--bs-font);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: -0.01em;
}
.bs-logo-text span { color: var(--bs-accent); }

/* Nav */
.bs-nav {
    display: flex;
    align-items: center;
    gap: 0.15rem;
}

.bs-nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.65rem;
    border-radius: var(--bs-radius-pill);
    font-size: 0.825rem;
    font-weight: 500;
    color: var(--bs-text-secondary);
    text-decoration: none;
    transition: all var(--bs-transition);
    white-space: nowrap;
}

.bs-nav-link:hover {
    color: var(--bs-warm);
    background: var(--bs-warm-soft);
}

.bs-nav-link .bs-icon {
    color: var(--bs-text-tertiary);
    transition: color var(--bs-transition);
}
.bs-nav-link:hover .bs-icon { color: var(--bs-warm); }

/* Lang switch */
.bs-lang-switch {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 0;
    border: 1px solid var(--bs-border-strong);
    border-radius: var(--bs-radius-pill);
    overflow: hidden;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
}

.bs-lang-current {
    padding: 0.35rem 0.55rem;
    color: var(--bs-surface);
    background: var(--bs-accent);
}

.bs-lang-toggle {
    padding: 0.35rem 0.55rem;
    color: var(--bs-text-tertiary);
    text-decoration: none;
    transition: color var(--bs-transition), background var(--bs-transition);
}

.bs-lang-toggle:hover {
    color: var(--bs-accent);
    background: var(--bs-accent-soft);
}

/* Mobile toggle */
.bs-nav-toggle {
    display: none;
    align-items: center; justify-content: center;
    width: 36px; height: 36px;
    border: 1px solid var(--bs-border-strong);
    border-radius: var(--bs-radius);
    background: transparent;
    cursor: pointer;
    color: var(--bs-text-secondary);
    padding: 0;
}
.bs-nav-toggle .icon-close { display: none; }
body.bs-nav-open .bs-nav-toggle .icon-menu { display: none; }
body.bs-nav-open .bs-nav-toggle .icon-close { display: block; }


/* ==========================================================
   MAIN
   ========================================================== */

.bs-main {
    flex: 1;
    padding: 2rem 0 4rem;
}


/* ==========================================================
   HERO
   ========================================================== */

.bs-hero {
    padding: 2.5rem 0 2rem;
}

.bs-hero-content {
    max-width: 600px;
}

.bs-hero h1 {
    font-size: 2.6rem;
    margin-bottom: 1rem;
}

.bs-hero p {
    font-size: 1.05rem;
    color: var(--bs-text-secondary);
    line-height: 1.7;
    max-width: 540px;
}

.bs-hero-line {
    height: 2px;
    border-radius: 1px;
    background: linear-gradient(90deg, var(--bs-accent), var(--bs-warm), var(--bs-rose), transparent);
    max-width: 180px;
    margin-top: 1.5rem;
    opacity: 0.7;
}


/* ==========================================================
   SECTIONS
   ========================================================== */

.bs-section {
    margin-top: 2.5rem;
}

.bs-section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 1rem;
    gap: 1rem;
}

.bs-section-header h2 {
    font-size: 1.35rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.bs-section-header h2 .bs-icon { color: var(--bs-text-tertiary); }

.bs-section-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--bs-accent);
    white-space: nowrap;
    transition: gap var(--bs-transition);
}
.bs-section-link:hover { gap: 0.4rem; }

.bs-section-subtitle {
    color: var(--bs-text-secondary);
    font-size: 0.9rem;
    max-width: 600px;
    margin-bottom: 1.5rem;
    line-height: 1.65;
}

.bs-divider {
    height: 1px;
    background: var(--bs-border);
    margin: 2.5rem 0;
}


/* ==========================================================
   CARD GRIDS
   ========================================================== */

.bs-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.1rem;
}

.bs-card-row {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}


/* ==========================================================
   CARDS — no borders, just subtle lift
   ========================================================== */

.bs-card {
    background: var(--bs-surface);
    border-radius: var(--bs-radius-lg);
    border: none;
    box-shadow: var(--bs-shadow-xs);
    padding: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    transition: box-shadow var(--bs-transition), transform var(--bs-transition);
}

.bs-card:hover {
    box-shadow: var(--bs-shadow-hover);
    transform: translateY(-1px);
}

.bs-card-image {
    height: 160px;
    border-radius: var(--bs-radius);
    background-size: cover;
    background-position: center;
    background-color: var(--bs-surface-alt);
    margin: -1.2rem -1.2rem 0.7rem;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

.bs-card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.bs-card-category {
    font-family: var(--bs-font);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--bs-accent);
}

.bs-card h3 { font-size: 1rem; margin: 0; }
.bs-card h3 a { color: var(--bs-text); }
.bs-card h3 a:hover { color: var(--bs-accent); }

.bs-card-excerpt {
    font-size: 0.85rem;
    color: var(--bs-text-secondary);
    line-height: 1.6;
    flex: 1;
}

.bs-card-meta {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    color: var(--bs-text-tertiary);
    margin-top: 0.2rem;
}

/* Video cards */
.bs-card-video .bs-video-thumb {
    width: 100%;
    border-radius: var(--bs-radius);
    margin-bottom: 0.4rem;
}

.bs-card-video .bs-video-thumb-placeholder {
    width: 100%;
    height: 130px;
    border-radius: var(--bs-radius);
    background: var(--bs-surface-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.4rem;
    color: var(--bs-text-faint);
}


/* ==========================================================
   BUTTONS
   ========================================================== */

.bs-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.5rem 1rem;
    border-radius: var(--bs-radius-pill);
    font-family: var(--bs-font);
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--bs-transition);
    cursor: pointer;
    border: none;
}

.bs-button-primary {
    background: var(--bs-accent);
    color: #fff;
}
.bs-button-primary:hover {
    background: var(--bs-accent-hover);
    color: #fff;
}

.bs-button-outline {
    background: transparent;
    color: var(--bs-accent);
    box-shadow: inset 0 0 0 1.5px var(--bs-accent);
}
.bs-button-outline:hover {
    background: var(--bs-accent-soft);
    color: var(--bs-accent-hover);
}

.bs-button-sm {
    padding: 0.35rem 0.7rem;
    font-size: 0.75rem;
}


/* ==========================================================
   BADGES — soft tints
   ========================================================== */

.bs-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    font-family: var(--bs-font);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.15rem 0.45rem;
    border-radius: var(--bs-radius-pill);
    white-space: nowrap;
}

.bs-badge-source {
    background: var(--bs-accent-soft);
    color: var(--bs-accent);
}

.bs-badge-level {
    background: var(--bs-warm-soft);
    color: var(--bs-warm);
}

.bs-badge-level--meta_analysis {
    background: var(--bs-rose-soft);
    color: var(--bs-rose);
}

.bs-badge-level--preprint {
    background: var(--bs-surface-alt);
    color: var(--bs-text-tertiary);
}

.bs-badge-level--peer_reviewed {
    background: var(--bs-accent-soft);
    color: var(--bs-accent);
}

.bs-badge-pr {
    background: #E8F5E9;
    color: #2E7D32;
}

.bs-badge-oa {
    background: var(--bs-warm-soft);
    color: var(--bs-warm);
}


/* ==========================================================
   EVIDENCE HUB
   ========================================================== */

.bs-evidence-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 1.5rem;
    padding: 0.7rem 0.9rem;
    background: var(--bs-surface);
    border-radius: var(--bs-radius);
    box-shadow: var(--bs-shadow-xs);
}

.bs-evidence-filters .bs-icon { color: var(--bs-text-faint); }

.bs-evidence-filters select {
    appearance: none; -webkit-appearance: none;
    background: var(--bs-bg);
    border: 1px solid var(--bs-border-strong);
    border-radius: var(--bs-radius);
    color: var(--bs-text);
    font-family: var(--bs-font);
    padding: 0.35rem 1.8rem 0.35rem 0.5rem;
    font-size: 0.8rem;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%238A8A8A' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.45rem center;
}

.bs-filter-check {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    color: var(--bs-text-secondary);
    cursor: pointer;
}

.bs-filter-check input[type="checkbox"] {
    accent-color: var(--bs-accent);
    width: 14px; height: 14px;
}

.bs-evidence-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.bs-evidence-card {
    background: var(--bs-surface);
    border-radius: var(--bs-radius);
    box-shadow: var(--bs-shadow-xs);
    padding: 1rem 1.15rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    transition: box-shadow var(--bs-transition);
}
.bs-evidence-card:hover { box-shadow: var(--bs-shadow); }

.bs-evidence-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-bottom: 0.1rem;
}

.bs-evidence-title {
    font-family: var(--bs-font);
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0;
    line-height: 1.45;
}
.bs-evidence-title a { color: var(--bs-text); }
.bs-evidence-title a:hover { color: var(--bs-accent); }

.bs-evidence-authors {
    font-size: 0.8rem;
    color: var(--bs-text-tertiary);
    margin: 0;
}

.bs-evidence-meta {
    display: flex;
    gap: 0.7rem;
    font-size: 0.75rem;
    color: var(--bs-text-tertiary);
    align-items: center;
}

.bs-evidence-abstract {
    font-size: 0.8rem;
    color: var(--bs-text-secondary);
    line-height: 1.6;
    margin: 0;
}

.bs-evidence-doi {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.7rem;
    color: var(--bs-accent);
    word-break: break-all;
}
.bs-evidence-doi:hover { color: var(--bs-accent-hover); text-decoration: underline; }

.bs-evidence-empty {
    color: var(--bs-text-tertiary);
    font-size: 0.9rem;
    text-align: center;
    padding: 3rem 1rem;
}


/* ==========================================================
   ARTICLE DETAIL
   ========================================================== */

.bs-article {
    max-width: 680px;
    margin: 0 auto;
}

.bs-article-header { margin-bottom: 2rem; }

.bs-article-category {
    font-family: var(--bs-font);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--bs-accent);
    margin-bottom: 0.5rem;
}

.bs-article-header h1 {
    font-size: 2rem;
    margin-bottom: 0.6rem;
}

.bs-article-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--bs-text-tertiary);
}

.bs-article-cover {
    margin-top: 1.5rem;
    width: 100%;
    border-radius: var(--bs-radius-lg);
}

.bs-article-body {
    line-height: 1.8;
    font-size: 1rem;
    color: var(--bs-text);
}
.bs-article-body p { margin-bottom: 1.2rem; }
.bs-article-body a { text-decoration: underline; text-underline-offset: 2px; }

/* Connected Research */
.bs-linked-articles {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.bs-linked-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--bs-border);
    border-radius: var(--bs-radius);
    text-decoration: none;
    color: var(--bs-text);
    transition: all 0.2s;
}
.bs-linked-item:hover {
    border-color: var(--bs-accent);
    background: var(--bs-accent-soft);
}
.bs-linked-type {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    white-space: nowrap;
    padding: 0.2rem 0.5rem;
    border-radius: var(--bs-radius-sm);
}
.bs-linked-type--outgoing { background: var(--bs-accent-soft); color: var(--bs-accent); }
.bs-linked-type--incoming { background: var(--bs-warm-soft); color: var(--bs-warm); }
.bs-linked-title {
    font-size: 0.88rem;
    flex: 1;
}
.bs-linked-year {
    color: var(--bs-text-tertiary);
    font-size: 0.78rem;
}

/* ==========================================================
   ABOUT
   ========================================================== */

.bs-about-body {
    max-width: 680px;
}

.bs-about-body p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--bs-text);
}


/* ==========================================================
   FOOTER — always at bottom
   ========================================================== */

.bs-footer {
    margin-top: auto;
    flex-shrink: 0;
    padding: 0;
    background: var(--bs-surface-alt);
}

.bs-footer-line {
    height: 2px;
    background: linear-gradient(90deg, var(--bs-accent), var(--bs-warm), var(--bs-rose), transparent);
    opacity: 0.4;
}

.bs-footer-inner {
    max-width: var(--bs-max-w);
    margin: 0 auto;
    padding: 1.25rem var(--bs-gutter);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.bs-footer-copy {
    font-size: 0.8rem;
    color: var(--bs-text-tertiary);
    margin: 0;
}

.bs-footer-tagline {
    font-size: 0.8rem;
    color: var(--bs-text-faint);
    font-style: italic;
    margin: 0;
}


/* ==========================================================
   EMPTY STATES
   ========================================================== */

.bs-empty {
    text-align: center;
    padding: 2.5rem 1rem;
    color: var(--bs-text-tertiary);
}

.bs-empty .bs-icon {
    width: 36px; height: 36px;
    max-width: 36px; max-height: 36px;
    color: var(--bs-text-faint);
    margin-bottom: 0.75rem;
}


/* ==========================================================
   RESPONSIVE
   ========================================================== */

@media (max-width: 1024px) {
    .bs-nav-link span { display: none; }
    .bs-nav-link { padding: 0.4rem; }
    .bs-nav { gap: 0.05rem; }
}

@media (max-width: 640px) {
    :root { --bs-gutter: 1rem; }

    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.2rem; }

    .bs-header-inner { height: 52px; }

    .bs-nav-toggle { display: flex; }

    .bs-nav {
        display: none;
        position: absolute;
        top: 100%; left: 0; right: 0;
        flex-direction: column;
        padding: 0.5rem 1rem 0.8rem;
        background: rgba(250, 250, 249, 0.97);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--bs-border);
        gap: 0.1rem;
        box-shadow: var(--bs-shadow);
    }

    body.bs-nav-open .bs-nav { display: flex; }

    .bs-nav-link {
        padding: 0.55rem 0.7rem;
        border-radius: var(--bs-radius);
        width: 100%;
        font-size: 0.9rem;
    }
    .bs-nav-link span { display: inline; }

    .bs-hero { padding: 1.5rem 0 1rem; }
    .bs-hero h1 { font-size: 1.85rem; }
    .bs-hero p { font-size: 0.95rem; }

    .bs-card-grid, .bs-card-row {
        grid-template-columns: 1fr;
    }

    .bs-evidence-filters {
        flex-direction: column;
        align-items: stretch;
    }
    .bs-evidence-filters select { width: 100%; }

    .bs-article-header h1 { font-size: 1.5rem; }

    .bs-footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .bs-section { margin-top: 2rem; }
    .bs-divider { margin: 2rem 0; }
}

@media (min-width: 1200px) {
    .bs-hero h1 { font-size: 2.8rem; }
}


/* ==========================================================
   HEADER SEARCH
   ========================================================== */

/* Header right-side group */
.bs-header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.bs-header-search {
    flex-shrink: 0;
}

.bs-header-search-input {
    width: 120px;
    padding: 0.3rem 0.7rem;
    border: 1px solid var(--bs-border-strong);
    border-radius: var(--bs-radius-pill);
    font-family: var(--bs-font);
    font-size: 0.78rem;
    color: var(--bs-text-secondary);
    background: transparent;
    transition: width var(--bs-transition), border-color var(--bs-transition);
}

.bs-header-search-input:focus {
    outline: none;
    width: 170px;
    border-color: var(--bs-accent);
}

@media (max-width: 640px) {
    .bs-header-search { display: none; }
}


/* ==========================================================
   PAGINATION
   ========================================================== */

.bs-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--bs-border);
}

.bs-pagination-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--bs-accent);
}

.bs-pagination-link:hover {
    color: var(--bs-accent-hover);
}

.bs-pagination-info {
    font-size: 0.8rem;
    color: var(--bs-text-tertiary);
}


/* ==========================================================
   SEARCH PAGE
   ========================================================== */

.bs-search-form {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.bs-search-input {
    flex: 1;
    padding: 0.6rem 1rem;
    border: 1px solid var(--bs-border-strong);
    border-radius: var(--bs-radius-pill);
    font-family: var(--bs-font);
    font-size: 0.95rem;
    color: var(--bs-text);
    background: var(--bs-surface);
}

.bs-search-input:focus {
    outline: none;
    border-color: var(--bs-accent);
    box-shadow: 0 0 0 3px var(--bs-accent-soft);
}

.bs-search-meta {
    font-size: 0.85rem;
    color: var(--bs-text-tertiary);
    margin-bottom: 1.5rem;
}


/* ==========================================================
   QUIZ — Me & AI
   ========================================================== */

.bs-quiz-form {
    max-width: 720px;
}

.bs-quiz-dimension {
    margin-bottom: 2rem;
}

.bs-quiz-dim-title {
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--bs-accent-soft);
    margin-bottom: 1.25rem;
}

.bs-quiz-question {
    background: var(--bs-surface);
    border-radius: var(--bs-radius);
    padding: 1.25rem 1.5rem;
    margin-bottom: 0.75rem;
    box-shadow: var(--bs-shadow-xs);
}

.bs-quiz-q-text {
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.bs-quiz-q-num {
    color: var(--bs-accent);
    font-weight: 700;
    margin-right: 0.35rem;
}

.bs-quiz-likert {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.bs-quiz-anchor {
    font-size: 0.72rem;
    color: var(--bs-text-tertiary);
    max-width: 90px;
    line-height: 1.3;
}

.bs-quiz-option {
    cursor: pointer;
}

.bs-quiz-option input {
    display: none;
}

.bs-quiz-dot {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border-radius: 50%;
    border: 2px solid var(--bs-border-strong);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--bs-text-secondary);
    transition: all var(--bs-transition);
}

.bs-quiz-option input:checked + .bs-quiz-dot {
    background: var(--bs-accent);
    border-color: var(--bs-accent);
    color: #fff;
}

.bs-quiz-option:hover .bs-quiz-dot {
    border-color: var(--bs-accent);
}

.bs-quiz-submit {
    margin-top: 2rem;
}

/* Quiz results */

.bs-quiz-total {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin: 2rem 0;
}

.bs-quiz-total-circle {
    position: relative;
    width: 120px; height: 120px;
    border-radius: 50%;
    background: conic-gradient(
        var(--bs-accent) calc(var(--pct) * 1%),
        var(--bs-surface-alt) 0
    );
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.bs-quiz-total-circle::after {
    content: '';
    position: absolute;
    inset: 10px;
    border-radius: 50%;
    background: var(--bs-bg);
}

.bs-quiz-total-num {
    position: relative;
    z-index: 1;
    font-family: var(--bs-font-display);
    font-size: 1.8rem;
    color: var(--bs-accent);
}

.bs-quiz-total-label {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--bs-text-secondary);
}

.bs-quiz-dimensions {
    max-width: 520px;
    margin: 2rem 0;
}

.bs-quiz-dim-result {
    margin-bottom: 1.25rem;
}

.bs-quiz-dim-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.35rem;
}

.bs-quiz-dim-name {
    font-size: 0.9rem;
    font-weight: 500;
}

.bs-quiz-dim-pct {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--bs-accent);
}

.bs-quiz-bar {
    height: 8px;
    background: var(--bs-surface-alt);
    border-radius: 4px;
    overflow: hidden;
}

.bs-quiz-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--bs-accent), var(--bs-warm));
    border-radius: 4px;
    transition: width 0.6s ease;
}

.bs-quiz-methodology {
    margin-top: 2.5rem;
    padding: 1.25rem 1.5rem;
    background: var(--bs-surface-alt);
    border-radius: var(--bs-radius);
    font-size: 0.85rem;
    color: var(--bs-text-secondary);
}

.bs-quiz-methodology h3 {
    margin-bottom: 0.5rem;
}

@media (max-width: 640px) {
    .bs-quiz-likert {
        justify-content: center;
    }

    .bs-quiz-anchor {
        display: none;
    }

    .bs-quiz-question {
        padding: 1rem;
    }

    .bs-quiz-total {
        flex-direction: column;
        text-align: center;
    }
}


/* ==========================================================
   CONTACT
   ========================================================== */

.bs-contact-form {
    max-width: 600px;
}

.bs-contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

@media (max-width: 640px) {
    .bs-contact-grid { grid-template-columns: 1fr; }
}

.bs-contact-field {
    margin-bottom: 1rem;
}

.bs-contact-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--bs-text-secondary);
    margin-bottom: 0.35rem;
}

.bs-contact-input {
    display: block;
    width: 100%;
    padding: 0.55rem 0.75rem;
    font-family: var(--bs-font);
    font-size: 0.9rem;
    color: var(--bs-text);
    background: var(--bs-surface);
    border: 1px solid var(--bs-border-strong);
    border-radius: var(--bs-radius);
    transition: border-color var(--bs-transition), box-shadow var(--bs-transition);
}

.bs-contact-input:focus {
    outline: none;
    border-color: var(--bs-accent);
    box-shadow: 0 0 0 3px var(--bs-accent-soft);
}

textarea.bs-contact-input {
    resize: vertical;
    min-height: 100px;
}

.bs-contact-success {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background: var(--bs-accent-soft);
    border-radius: var(--bs-radius);
    color: var(--bs-accent);
    font-weight: 500;
}

.bs-footer-links {
    font-size: 0.8rem;
}

.bs-footer-links a {
    color: var(--bs-text-tertiary);
}

.bs-footer-links a:hover {
    color: var(--bs-accent);
}


/* ============================================================
   Me & AI — Impact Calculator
   ============================================================ */

.bs-impact-hero {
    text-align: center;
    padding: 2rem 0 1.5rem;
}

.bs-impact-title {
    font-family: var(--bs-font-display);
    font-size: 2.4rem;
    color: var(--bs-text);
    margin-bottom: 0.5rem;
}

.bs-impact-subtitle {
    color: var(--bs-text-secondary);
    font-size: 1.05rem;
    max-width: 500px;
    margin: 0 auto;
}

.bs-impact-extension-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 0.8rem;
    padding: 0.4rem 1rem;
    background: var(--bs-accent-soft);
    color: var(--bs-accent);
    border-radius: var(--bs-radius-pill);
    font-size: 0.85rem;
    font-weight: 500;
}

.bs-impact-section-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--bs-font-display);
    font-size: 1.3rem;
    color: var(--bs-text);
    margin-bottom: 1.2rem;
}

.bs-impact-form {
    margin-bottom: 2rem;
}

/* Tool grid */
.bs-tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.bs-tool-card {
    background: var(--bs-surface);
    border: 1px solid var(--bs-border);
    border-radius: var(--bs-radius);
    padding: 1rem 1.2rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.bs-tool-card--active {
    border-color: var(--bs-accent);
    box-shadow: 0 0 0 2px var(--bs-accent-soft);
}

.bs-tool-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.7rem;
}

.bs-tool-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--bs-text);
}

.bs-tool-badge {
    font-size: 0.7rem;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.bs-tool-badge--chat { background: var(--bs-accent-soft); color: var(--bs-accent); }
.bs-tool-badge--code { background: #EEF0FF; color: #4F5BD5; }
.bs-tool-badge--image { background: var(--bs-warm-soft); color: var(--bs-warm); }
.bs-tool-badge--search { background: #F0F5EE; color: #4A7C3F; }
.bs-tool-badge--other { background: var(--bs-surface-alt); color: var(--bs-text-secondary); }

.bs-tool-slider-wrap {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.5rem;
}

.bs-tool-slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: var(--bs-surface-alt);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.bs-tool-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bs-accent);
    border: 2px solid var(--bs-surface);
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
    cursor: pointer;
}

.bs-tool-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bs-accent);
    border: 2px solid var(--bs-surface);
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
    cursor: pointer;
}

.bs-tool-value {
    min-width: 32px;
    text-align: right;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--bs-accent);
    font-variant-numeric: tabular-nums;
}

.bs-tool-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--bs-text-tertiary);
}

.bs-tool-stat {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.bs-icon-xs {
    width: 12px;
    height: 12px;
}

/* Live summary strip */
.bs-impact-live-strip {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    padding: 0.8rem 1.2rem;
    margin: 1.5rem 0;
    background: var(--bs-accent-soft);
    border-radius: var(--bs-radius);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--bs-accent);
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.3s, transform 0.3s;
    pointer-events: none;
}

.bs-live-strip--visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.bs-live-stat {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* Submit button */
.bs-impact-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    max-width: 340px;
    margin: 0 auto;
    padding: 0.85rem 1.5rem;
    background: var(--bs-accent);
    color: #fff;
    border: none;
    border-radius: var(--bs-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.bs-impact-submit:hover {
    background: var(--bs-accent-hover);
}

/* Results */
.bs-impact-results {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 2px solid var(--bs-accent-soft);
}

.bs-impact-results-title {
    font-family: var(--bs-font-display);
    font-size: 1.6rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

.bs-impact-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.bs-impact-stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    padding: 1.2rem 0.8rem;
    background: var(--bs-surface);
    border-radius: var(--bs-radius);
    border: 1px solid var(--bs-border);
    text-align: center;
}

.bs-impact-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--bs-text);
}

.bs-impact-stat-label {
    font-size: 0.78rem;
    color: var(--bs-text-tertiary);
}

.bs-impact-stat--energy .bs-icon { color: var(--bs-warm); }
.bs-impact-stat--co2 .bs-icon { color: #4A7C3F; }
.bs-impact-stat--water .bs-icon { color: #4F8BD5; }
.bs-impact-stat--hours .bs-icon { color: var(--bs-accent); }

/* Breakdown bars */
.bs-impact-breakdown {
    margin-bottom: 2rem;
}

.bs-impact-breakdown h3 {
    font-size: 1.05rem;
    margin-bottom: 0.8rem;
}

.bs-breakdown-item {
    margin-bottom: 0.6rem;
}

.bs-breakdown-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    margin-bottom: 0.2rem;
}

.bs-breakdown-val {
    color: var(--bs-text-tertiary);
    font-variant-numeric: tabular-nums;
}

.bs-breakdown-bar {
    height: 6px;
    background: var(--bs-surface-alt);
    border-radius: 3px;
    overflow: hidden;
}

.bs-breakdown-fill {
    height: 100%;
    background: var(--bs-accent);
    border-radius: 3px;
    min-width: 4px;
    transition: width 0.4s ease;
}

/* Comparisons */
.bs-impact-comparisons {
    margin-bottom: 2rem;
}

.bs-impact-comparisons h3 {
    font-size: 1.05rem;
    margin-bottom: 1rem;
}

.bs-comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.8rem;
}

.bs-comparison-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    padding: 1rem 0.6rem;
    background: var(--bs-surface-alt);
    border-radius: var(--bs-radius);
    text-align: center;
}

.bs-comparison-card .bs-icon {
    color: var(--bs-text-tertiary);
}

.bs-comparison-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--bs-text);
    font-variant-numeric: tabular-nums;
}

.bs-comparison-label {
    font-size: 0.75rem;
    color: var(--bs-text-secondary);
}

/* Cognitive assessment */
.bs-impact-cognitive {
    margin-bottom: 2rem;
}

.bs-impact-cognitive h3 {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 1.05rem;
    margin-bottom: 1rem;
}

.bs-cognitive-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.bs-cognitive-card {
    padding: 1rem;
    border-radius: var(--bs-radius);
    text-align: center;
}

.bs-cognitive-label {
    display: block;
    font-size: 0.8rem;
    color: var(--bs-text-secondary);
    margin-bottom: 0.3rem;
}

.bs-cognitive-level {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
}

.bs-cognitive--low { background: #EBF5E8; }
.bs-cognitive--low .bs-cognitive-level { color: #3A7D2C; }
.bs-cognitive--moderate { background: var(--bs-warm-soft); }
.bs-cognitive--moderate .bs-cognitive-level { color: var(--bs-warm); }
.bs-cognitive--high { background: #FDECE8; }
.bs-cognitive--high .bs-cognitive-level { color: #C25F3A; }
.bs-cognitive--critical { background: #FDE8E8; }
.bs-cognitive--critical .bs-cognitive-level { color: #C23A3A; }

.bs-cognitive-warning {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    padding: 1rem;
    background: #FDE8E8;
    border-radius: var(--bs-radius);
    font-size: 0.88rem;
    color: #8B2E2E;
    line-height: 1.5;
}

.bs-cognitive-warning .bs-icon {
    flex-shrink: 0;
    color: #C23A3A;
    margin-top: 2px;
}

/* Risk study tiles */
.bs-risk-studies {
    margin-top: 1.5rem;
}
.bs-risk-studies h4 {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--bs-text);
    margin-bottom: 0.75rem;
}
.bs-risk-studies h4 .bs-icon { color: var(--bs-rose); }
.bs-risk-studies-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}
.bs-risk-study-card {
    display: flex;
    gap: 0.6rem;
    padding: 0.85rem;
    background: var(--bs-rose-soft);
    border: 1px solid rgba(194, 95, 106, 0.15);
    border-radius: var(--bs-radius);
    text-decoration: none;
    color: var(--bs-text);
    transition: transform .15s, box-shadow .15s;
    align-items: flex-start;
}
.bs-risk-study-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--bs-shadow-hover);
}
.bs-risk-study-card > .bs-icon {
    flex-shrink: 0;
    color: var(--bs-rose);
    margin-top: 2px;
}
.bs-risk-study-body strong {
    display: block;
    font-size: 0.82rem;
    line-height: 1.3;
    margin-bottom: 0.3rem;
}
.bs-risk-study-body p {
    font-size: 0.75rem;
    color: var(--bs-text-secondary);
    line-height: 1.4;
    margin-bottom: 0.3rem;
}
.bs-risk-study-body cite {
    font-size: 0.65rem;
    color: var(--bs-text-faint);
    font-style: normal;
}

/* Research insights */
.bs-impact-insights {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--bs-border);
}

.bs-insight-group {
    margin-bottom: 2rem;
}

.bs-insight-category {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--bs-text-tertiary);
    margin-bottom: 0.8rem;
}

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

.bs-insight-card {
    background: var(--bs-surface);
    border: 1px solid var(--bs-border);
    border-radius: var(--bs-radius);
    padding: 1.2rem;
}

.bs-insight--featured {
    border-left: 3px solid var(--bs-accent);
}

.bs-insight-stat {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--bs-accent);
    background: var(--bs-accent-soft);
    padding: 2px 8px;
    border-radius: 12px;
    margin-bottom: 0.5rem;
}

.bs-insight-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--bs-text);
    margin-bottom: 0.5rem;
    line-height: 1.35;
}

.bs-insight-card p {
    font-size: 0.85rem;
    color: var(--bs-text-secondary);
    line-height: 1.55;
    margin-bottom: 0.6rem;
}

.bs-insight-source {
    display: block;
    font-size: 0.72rem;
    color: var(--bs-text-faint);
    font-style: normal;
}

/* Quiz link CTA */
.bs-impact-quiz-link {
    text-align: center;
    padding: 2rem 0 1rem;
    margin-top: 1rem;
}

.bs-impact-quiz-link p {
    color: var(--bs-text-secondary);
    margin-bottom: 0.8rem;
}

.bs-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.2rem;
    border-radius: var(--bs-radius);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.bs-btn--outline {
    background: transparent;
    border: 1px solid var(--bs-accent);
    color: var(--bs-accent);
}

.bs-btn--outline:hover {
    background: var(--bs-accent-soft);
}

/* Primary button */
.bs-btn--primary {
    background: var(--bs-accent);
    color: #fff;
}

.bs-btn--primary:hover {
    background: var(--bs-accent-hover);
}

.bs-btn--lg {
    padding: 0.85rem 1.6rem;
    font-size: 1rem;
}

/* ============================================================
   Homepage Extension Banner (in hero area)
   ============================================================ */

.bs-ext-banner {
    margin-bottom: 2rem;
}

.bs-ext-banner-inner {
    display: flex;
    gap: 1.5rem;
    padding: 1.8rem 2rem;
    background: linear-gradient(135deg, var(--bs-accent-soft) 0%, #E0F0ED 100%);
    border: 1px solid rgba(61, 139, 128, 0.15);
    border-radius: var(--bs-radius-lg, 12px);
}

.bs-ext-banner-icon {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bs-accent);
    border-radius: 14px;
    color: #fff;
}

.bs-ext-banner-content h2 {
    font-family: var(--bs-font-display);
    font-size: 1.2rem;
    color: var(--bs-text);
    margin-bottom: 0.5rem;
}

.bs-ext-banner-desc {
    color: var(--bs-text-secondary);
    font-size: 0.88rem;
    line-height: 1.55;
    margin-bottom: 0.8rem;
}

.bs-ext-banner-benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    margin-bottom: 1rem;
}

.bs-ext-benefit {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--bs-accent);
}

.bs-ext-benefit .bs-icon {
    color: var(--bs-accent);
}

/* ============================================================
   Extension Download Page
   ============================================================ */

.bs-ext-hero {
    text-align: center;
    padding: 2rem 0 1.5rem;
}

.bs-ext-hero h1 {
    font-family: var(--bs-font-display);
    font-size: 2.2rem;
    color: var(--bs-text);
    margin-bottom: 0.5rem;
}

.bs-ext-subtitle {
    color: var(--bs-text-secondary);
    font-size: 1.05rem;
    max-width: 520px;
    margin: 0 auto;
}

.bs-ext-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.2rem;
    margin: 2rem 0;
}

.bs-ext-feature {
    background: var(--bs-surface);
    border: 1px solid var(--bs-border);
    border-radius: var(--bs-radius);
    padding: 1.2rem;
    text-align: center;
}

.bs-ext-feature .bs-icon {
    color: var(--bs-accent);
    margin-bottom: 0.5rem;
}

.bs-ext-feature h3 {
    font-size: 0.95rem;
    margin-bottom: 0.4rem;
}

.bs-ext-feature p {
    font-size: 0.82rem;
    color: var(--bs-text-secondary);
    line-height: 1.5;
}

.bs-ext-download {
    text-align: center;
    padding: 2rem 0;
    margin: 1rem 0;
    border-top: 1px solid var(--bs-border);
    border-bottom: 1px solid var(--bs-border);
}

.bs-ext-download h2 {
    font-family: var(--bs-font-display);
    font-size: 1.4rem;
    margin-bottom: 1.2rem;
}

.bs-ext-steps {
    max-width: 460px;
    margin: 2rem auto 0;
    text-align: left;
}

.bs-ext-steps h3 {
    font-size: 1rem;
    margin-bottom: 0.8rem;
}

.bs-ext-steps ol {
    padding-left: 1.2rem;
}

.bs-ext-steps li {
    padding: 0.35rem 0;
    font-size: 0.9rem;
    color: var(--bs-text-secondary);
    line-height: 1.5;
}

.bs-ext-steps code {
    background: var(--bs-surface-alt);
    padding: 1px 5px;
    border-radius: 3px;
    font-size: 0.85em;
}

.bs-ext-tools {
    text-align: center;
    padding: 1.5rem 0;
}

.bs-ext-tools h3 {
    font-size: 1rem;
    margin-bottom: 0.8rem;
}

.bs-ext-tool-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.bs-ext-tool-tag {
    font-size: 0.82rem;
    padding: 4px 12px;
    background: var(--bs-surface-alt);
    border-radius: 16px;
    color: var(--bs-text-secondary);
}

.bs-ext-privacy {
    max-width: 540px;
    margin: 1.5rem auto;
    padding: 1.2rem;
    background: var(--bs-accent-soft);
    border-radius: var(--bs-radius);
}

.bs-ext-privacy h3 {
    font-size: 0.95rem;
    color: var(--bs-accent);
    margin-bottom: 0.4rem;
}

.bs-ext-privacy p {
    font-size: 0.85rem;
    color: var(--bs-text-secondary);
    line-height: 1.55;
}

.bs-ext-cta-bottom {
    text-align: center;
    padding: 2rem 0 1rem;
}

.bs-ext-cta-bottom p {
    color: var(--bs-text-secondary);
    margin-bottom: 0.8rem;
}

/* ============================================================
   Sweet & Bitter — Sentiment badges, filter bar, page hero
   ============================================================ */

.bs-sentiment-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.65rem;
    border-radius: var(--bs-radius-pill);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.bs-sentiment-sweet { background: var(--bs-accent-soft); color: var(--bs-accent); }
.bs-sentiment-bitter { background: var(--bs-rose-soft); color: var(--bs-rose); }
.bs-sentiment-both { background: var(--bs-warm-soft); color: var(--bs-warm); }

/* Sweet & Bitter page hero */
.bs-sb-hero {
    text-align: center;
    padding: 2rem 0 1.5rem;
}

.bs-sb-title {
    font-family: var(--bs-font-display);
    font-size: 2.4rem;
    color: var(--bs-text);
    margin-bottom: 0.5rem;
}

.bs-sb-subtitle {
    color: var(--bs-text-secondary);
    font-size: 1.05rem;
    max-width: 540px;
    margin: 0 auto 1.5rem;
}

/* ---- Impact Dashboard ---- */
/* Impact Dashboard — horizontal cards */
.bs-dash {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin: 2rem auto 0;
    max-width: var(--bs-max-w);
}
a.bs-dash-card,
.bs-dash-card {
    background: var(--bs-surface);
    border-radius: var(--bs-radius-lg);
    padding: 1.25rem 1.1rem;
    display: grid;
    grid-template-columns: 72px 1fr;
    grid-template-rows: auto auto auto;
    column-gap: 1rem;
    row-gap: 0.25rem;
    align-items: center;
    border: 1px solid var(--bs-border);
    transition: transform .2s, box-shadow .2s;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}
a.bs-dash-card:hover,
.bs-dash-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--bs-shadow-hover);
}
.bs-dash-card--bitter { border-left: 3px solid var(--bs-rose); }
.bs-dash-card--sweet  { border-left: 3px solid var(--bs-accent); }

/* Donut ring */
.bs-dash-ring {
    grid-row: 1 / 4;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.bs-dash-ring::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: conic-gradient(
        var(--ring-color) calc(var(--pct) * 1%),
        var(--bs-surface-alt) calc(var(--pct) * 1%)
    );
    mask: radial-gradient(farthest-side, transparent calc(100% - 8px), #000 calc(100% - 7px));
    -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 8px), #000 calc(100% - 7px));
}
.bs-dash-ring--bitter { --ring-color: var(--bs-rose); }
.bs-dash-ring--sweet  { --ring-color: var(--bs-accent); }

.bs-dash-value {
    position: relative;
    z-index: 1;
    font-family: var(--bs-font-display);
    font-size: 1.2rem;
    color: var(--bs-text);
    line-height: 1.1;
}
.bs-dash-value small {
    font-size: 0.55em;
    font-family: var(--bs-font);
    color: var(--bs-text-secondary);
}
.bs-dash-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--bs-text);
    line-height: 1.3;
    align-self: end;
}
.bs-dash-desc {
    font-size: 0.8rem;
    color: var(--bs-text-secondary);
    line-height: 1.35;
}
.bs-dash-compare {
    font-size: 0.8rem;
    color: var(--bs-text-tertiary);
    line-height: 1.35;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    grid-column: 2;
    align-self: start;
}
.bs-dash-compare svg { flex-shrink: 0; }
.bs-dash-compare strong {
    color: var(--bs-text);
}
.bs-dash-card--bitter .bs-dash-compare strong { color: var(--bs-rose); }
.bs-dash-card--sweet  .bs-dash-compare strong { color: var(--bs-accent); }

.bs-dash-source {
    display: block;
    font-size: 0.65rem;
    color: var(--bs-text-faint);
    font-style: normal;
    margin-top: 0.15rem;
    grid-column: 2;
}

/* Category Impact Evaluation */
.bs-impact-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    justify-content: center;
}
.bs-impact-chip {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.6rem 1rem;
    border-radius: var(--bs-radius);
    border: 1px solid var(--bs-border);
    background: var(--bs-surface);
    text-decoration: none;
    color: var(--bs-text);
    min-width: 120px;
    transition: all 0.2s;
}
.bs-impact-chip:hover {
    border-color: var(--bs-accent);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.bs-impact-chip--active {
    border-color: var(--bs-accent);
    background: var(--bs-accent-soft);
}
.bs-impact-name {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}
.bs-impact-indicator {
    font-size: 0.7rem;
    font-weight: 500;
}
.bs-impact-indicator small {
    color: var(--bs-text-tertiary);
    margin-left: 0.2rem;
}
.bs-impact-chip--sweet .bs-impact-indicator { color: var(--bs-accent); }
.bs-impact-chip--bitter .bs-impact-indicator { color: var(--bs-rose); }
.bs-impact-chip--mixed .bs-impact-indicator { color: var(--bs-warm); }
.bs-impact-meter {
    height: 4px;
    border-radius: 2px;
    background: var(--bs-surface-alt);
    overflow: hidden;
}
.bs-impact-fill {
    display: block;
    height: 100%;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--bs-rose), var(--bs-warm), var(--bs-accent));
}

/* Load more */
.bs-load-more-wrap {
    display: flex;
    justify-content: center;
    margin: 2rem 0;
}

/* Filter bar */
.bs-filter-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.bs-sentiment-toggle {
    display: inline-flex;
    border: 1px solid var(--bs-border-strong);
    border-radius: var(--bs-radius-pill);
    overflow: hidden;
}

.bs-toggle-btn {
    padding: 0.45rem 1rem;
    font-size: 0.825rem;
    font-weight: 500;
    color: var(--bs-text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
    border-right: 1px solid var(--bs-border);
}

.bs-toggle-btn:last-child { border-right: none; }

.bs-toggle-btn:hover { background: var(--bs-surface-alt); }

.bs-toggle-btn--active {
    background: var(--bs-accent);
    color: #fff;
}

.bs-toggle-btn--active:hover { background: var(--bs-accent-hover); }

.bs-toggle-btn--sweet.bs-toggle-btn--active { background: var(--bs-accent); }
.bs-toggle-btn--bitter.bs-toggle-btn--active { background: var(--bs-rose); }

.bs-category-filter select {
    padding: 0.45rem 0.8rem;
    font-size: 0.825rem;
    border: 1px solid var(--bs-border-strong);
    border-radius: var(--bs-radius-pill);
    background: var(--bs-surface);
    color: var(--bs-text-secondary);
    cursor: pointer;
}

/* Card top row (badges) */
.bs-card-top {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.bs-card-video-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    margin-left: 0.5rem;
    font-size: 0.75rem;
    color: var(--bs-text-tertiary);
}

/* Card sentiment accent borders */
.bs-card--sweet { border-left: 3px solid var(--bs-accent); }
.bs-card--bitter { border-left: 3px solid var(--bs-rose); }

/* Article detail badges row */
.bs-article-badges {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.bs-article-video {
    margin-top: 1rem;
}

/* ============================================================
   CTA Banner (homepage Me & AI)
   ============================================================ */

.bs-cta-banner {
    margin: 2rem 0;
}

.bs-cta-inner {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--bs-accent-soft);
    border-radius: var(--bs-radius-lg);
    border: 1px solid rgba(61, 139, 128, 0.15);
}

.bs-cta-text h2 {
    font-family: var(--bs-font-display);
    font-size: 1.3rem;
    color: var(--bs-text);
    margin-bottom: 0.3rem;
}

.bs-cta-text p {
    color: var(--bs-text-secondary);
    font-size: 0.9rem;
}

.bs-cta-inner .bs-btn { flex-shrink: 0; }

/* ============================================================
   Sources list (About page)
   ============================================================ */

.bs-sources-intro {
    color: var(--bs-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.bs-sources-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.bs-source-item {
    padding: 1rem 1.2rem;
    background: var(--bs-surface);
    border-radius: var(--bs-radius);
    border: 1px solid var(--bs-border);
}

.bs-source-title {
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.bs-source-title a {
    color: var(--bs-accent);
    text-decoration: none;
}

.bs-source-title a:hover { text-decoration: underline; }

.bs-source-authors {
    font-size: 0.85rem;
    color: var(--bs-text-secondary);
    margin-bottom: 0.3rem;
}

.bs-source-desc {
    font-size: 0.85rem;
    color: var(--bs-text-tertiary);
}

/* Responsive */
@media (max-width: 640px) {
    .bs-impact-title { font-size: 1.8rem; }
    .bs-tool-grid { grid-template-columns: 1fr; }
    .bs-impact-live-strip { flex-wrap: wrap; gap: 0.8rem; font-size: 0.8rem; }
    .bs-cognitive-grid { grid-template-columns: 1fr; }
    .bs-risk-studies-grid { grid-template-columns: 1fr; }
    .bs-comparison-grid { grid-template-columns: repeat(2, 1fr); }
    .bs-insight-cards { grid-template-columns: 1fr; }
    .bs-ext-banner-inner { flex-direction: column; text-align: center; }
    .bs-ext-banner-icon { margin: 0 auto; }
    .bs-ext-banner-benefits { justify-content: center; }
    .bs-ext-features { grid-template-columns: 1fr 1fr; }
    .bs-sb-title { font-size: 1.8rem; }
    .bs-filter-bar { justify-content: center; }
    .bs-cta-inner { flex-direction: column; text-align: center; }
    .bs-dash { grid-template-columns: 1fr; gap: 0.5rem; margin-top: 1rem; }
    .bs-dash-card {
        padding: 0.25rem 0.4rem;
        grid-template-columns: 52px 1fr;
        column-gap: 0.6rem;
        row-gap: 0;
        border-radius: 10px;
    }
    .bs-dash-ring { width: 52px; height: 52px; }
    .bs-dash-ring::before {
        mask: radial-gradient(farthest-side, transparent calc(100% - 5px), #000 calc(100% - 4px));
        -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 5px), #000 calc(100% - 4px));
    }
    .bs-dash-value { font-size: 0.8rem; }
    .bs-dash-label { font-size: 0.75rem; margin-bottom: 0; }
    .bs-dash-compare { font-size: 0.68rem; gap: 0.2rem; white-space: nowrap; }
    .bs-dash-compare svg { width: 10px; height: 10px; }
    .bs-dash-source { display: none; }
}