/* Case study single — premium B2B (extends asb-home design system) */

.asb-casestudy {
    --asb-navy: #0f172a;
    --asb-navy-soft: #1e293b;
    --asb-gold: #f4cb10;
    --asb-gold-dark: #c9a006;
    --asb-cream: #f8fafc;
    --asb-muted: #64748b;
    --asb-border: rgba(15, 23, 42, 0.08);
    --asb-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
    --asb-shadow-hover: 0 12px 40px rgba(15, 23, 42, 0.12);
    --asb-radius-lg: 16px;
}

/* Hero */
.asb-casestudy .asb-case-hero {
    padding: clamp(3.5rem, 8vw, 5.5rem) 0 clamp(2.5rem, 5vw, 3.5rem);
}

.asb-casestudy .asb-case-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: center;
}

.asb-casestudy .asb-case-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 1.25rem;
    font-size: 13px;
    color: #94a3b8;
}

.asb-casestudy .asb-case-breadcrumb a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.2s;
}

.asb-casestudy .asb-case-breadcrumb a:hover {
    color: var(--asb-gold);
}

.asb-casestudy .asb-case-breadcrumb .iconify {
    font-size: 14px;
    color: #64748b;
}

.asb-casestudy .asb-case-hero-title {
    margin: 0 0 1rem;
    font-size: clamp(1.75rem, 4vw, 2.65rem);
    font-weight: 800;
    line-height: 1.2;
    color: #fff;
}

.asb-casestudy .asb-case-hero-lead {
    margin: 0 0 1.5rem;
    max-width: 52ch;
    font-size: 1.05rem;
    line-height: 1.7;
    color: #cbd5e1;
}

.asb-casestudy .asb-case-hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 1.25rem;
}

.asb-casestudy .asb-case-hero-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    border-radius: 10px;
}

.asb-casestudy .asb-case-hero-actions .btn-warning {
    background: var(--asb-gold);
    border-color: var(--asb-gold);
    color: var(--asb-navy);
}

.asb-casestudy .asb-case-hero-actions .btn-warning:hover {
    background: var(--asb-gold-dark);
    border-color: var(--asb-gold-dark);
    color: var(--asb-navy);
}

.asb-casestudy .asb-case-visual {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(244, 203, 16, 0.25);
    box-shadow:
        0 24px 48px rgba(0, 0, 0, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.04);
    min-height: 260px;
}

.asb-casestudy .asb-case-visual::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--asb-gold), var(--asb-gold-dark));
    z-index: 2;
}

.asb-casestudy .asb-case-visual img {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 280px;
    object-fit: cover;
}

.asb-casestudy .asb-case-visual-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    min-height: 280px;
    padding: 2rem;
    color: var(--asb-gold);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.asb-casestudy .asb-case-visual-placeholder .iconify {
    font-size: 48px;
    opacity: 0.85;
}

/* Challenge / solution */
.asb-casestudy .asb-case-proof {
    padding: clamp(3rem, 6vw, 4.5rem) 0;
    background: #fff;
}

.asb-casestudy .asb-case-panels {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
    max-width: 1000px;
    margin: 0 auto;
}

.asb-casestudy .asb-case-panel {
    position: relative;
    padding: 1.75rem 1.65rem 1.65rem;
    background: linear-gradient(155deg, #ffffff 0%, #f8fafc 55%, #f1f5f9 100%);
    border: 1px solid var(--asb-border);
    border-radius: 20px;
    box-shadow: var(--asb-shadow);
    overflow: hidden;
    transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.asb-casestudy .asb-case-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.asb-casestudy .asb-case-panel--challenge::before {
    background: linear-gradient(90deg, #94a3b8, transparent);
}

.asb-casestudy .asb-case-panel--solution::before {
    background: linear-gradient(90deg, var(--asb-gold), var(--asb-gold-dark));
}

.asb-casestudy .asb-case-panel:hover {
    transform: translateY(-4px);
    border-color: rgba(244, 203, 16, 0.35);
    box-shadow: var(--asb-shadow-hover);
}

.asb-casestudy .asb-case-panel-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin-bottom: 1rem;
    border-radius: 12px;
    background: rgba(244, 203, 16, 0.12);
    color: var(--asb-gold-dark);
    font-size: 22px;
}

.asb-casestudy .asb-case-panel--challenge .asb-case-panel-icon {
    background: rgba(15, 23, 42, 0.06);
    color: var(--asb-navy);
}

.asb-casestudy .asb-case-panel-label {
    margin: 0 0 0.65rem;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--asb-gold-dark);
}

.asb-casestudy .asb-case-panel--challenge .asb-case-panel-label {
    color: var(--asb-navy);
}

.asb-casestudy .asb-case-panel-text {
    margin: 0;
    font-size: 1rem;
    line-height: 1.7;
    color: #475569;
}

/* Body + rail */
.asb-casestudy .asb-case-body {
    padding: clamp(3rem, 6vw, 4.5rem) 0;
    background: linear-gradient(180deg, var(--asb-cream) 0%, #fff 100%);
}

.asb-casestudy .asb-case-body-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
    gap: clamp(1.5rem, 3vw, 2.5rem);
    align-items: start;
}

.asb-casestudy .asb-section-head--left {
    text-align: left;
    margin: 0 0 1.5rem;
    max-width: none;
}

.asb-casestudy .asb-case-prose {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--asb-navy-soft);
}

.asb-casestudy .asb-case-prose h2,
.asb-casestudy .asb-case-prose h3,
.asb-casestudy .asb-case-prose h4 {
    font-weight: 700;
    color: var(--asb-navy);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.asb-casestudy .asb-case-prose p {
    margin-bottom: 1rem;
}

.asb-casestudy .asb-case-prose ul,
.asb-casestudy .asb-case-prose ol {
    margin-bottom: 1rem;
    padding-left: 1.25rem;
}

.asb-casestudy .asb-case-prose img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 1rem 0;
}

.asb-casestudy .asb-case-rail {
    display: grid;
    gap: 1rem;
    position: sticky;
    top: 1.25rem;
}

.asb-casestudy .asb-case-rail-card {
    padding: 1.5rem 1.35rem;
    border-radius: 18px;
    border: 1px solid var(--asb-border);
    background: #fff;
    box-shadow: var(--asb-shadow);
}

.asb-casestudy .asb-case-rail-card--cta {
    background: linear-gradient(165deg, #0f172a 0%, #1e293b 100%);
    border-color: rgba(244, 203, 16, 0.25);
    color: #fff;
}

.asb-casestudy .asb-case-rail-card--cta h3 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
}

.asb-casestudy .asb-case-rail-card--cta p {
    margin: 0 0 1.15rem;
    font-size: 0.875rem;
    line-height: 1.6;
    color: #94a3b8;
}

.asb-casestudy .asb-case-rail-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.asb-casestudy .asb-case-rail-actions .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 10px;
    padding: 0.7rem 1rem;
}

.asb-casestudy .asb-case-rail-actions .btn-warning {
    background: var(--asb-gold);
    border-color: var(--asb-gold);
    color: var(--asb-navy);
}

.asb-casestudy .asb-case-rail-actions .btn-warning:hover {
    background: var(--asb-gold-dark);
    border-color: var(--asb-gold-dark);
    color: var(--asb-navy);
}

.asb-casestudy .asb-case-rail-actions .btn-outline-light {
    border-width: 1.5px;
}

.asb-casestudy .asb-case-rail-title {
    margin: 0 0 0.85rem;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--asb-gold-dark);
}

.asb-casestudy .asb-case-checklist {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 10px;
}

.asb-casestudy .asb-case-checklist li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--asb-navy);
    font-weight: 500;
}

.asb-casestudy .asb-case-checklist .iconify {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--asb-gold-dark);
    font-size: 18px;
}

/* Related */
.asb-casestudy .asb-case-related {
    padding: clamp(3rem, 6vw, 4.5rem) 0;
    background: #fff;
}

.asb-casestudy .asb-case-related-card {
    display: flex;
    flex-direction: column;
    width: 100%;
    padding: 1.5rem 1.35rem 1.35rem;
    background: #fff;
    border: 1px solid var(--asb-border);
    border-radius: var(--asb-radius-lg);
    box-shadow: var(--asb-shadow);
    transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.asb-casestudy .asb-case-related-card:hover {
    transform: translateY(-5px);
    border-color: rgba(244, 203, 16, 0.4);
    box-shadow: var(--asb-shadow-hover);
}

.asb-casestudy .asb-case-related-badge {
    display: inline-block;
    align-self: flex-start;
    margin-bottom: 0.75rem;
    padding: 5px 10px;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--asb-navy);
    background: rgba(244, 203, 16, 0.18);
    border-radius: 999px;
}

.asb-casestudy .asb-case-related-title {
    margin: 0 0 0.65rem;
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.35;
}

.asb-casestudy .asb-case-related-title a {
    color: var(--asb-navy);
    text-decoration: none;
    transition: color 0.2s;
}

.asb-casestudy .asb-case-related-title a:hover {
    color: var(--asb-gold-dark);
}

.asb-casestudy .asb-case-related-excerpt {
    margin: 0 0 1.15rem;
    flex: 1;
    font-size: 0.875rem;
    line-height: 1.65;
    color: var(--asb-muted);
}

.asb-casestudy .asb-case-related-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: auto;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--asb-navy);
    text-decoration: none;
    border-bottom: 1px solid var(--asb-gold);
    align-self: flex-start;
    padding-bottom: 2px;
    transition: color 0.2s, gap 0.2s;
}

.asb-casestudy .asb-case-related-cta:hover {
    color: var(--asb-gold-dark);
    gap: 12px;
}

.asb-casestudy .asb-case-related-cta .iconify {
    font-size: 18px;
}

/* CTA band */
.asb-casestudy .asb-case-cta {
    padding: clamp(3rem, 6vw, 4rem) 0;
    background: var(--asb-cream);
}

.asb-casestudy .asb-case-cta-box {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 1.25rem clamp(1rem, 2.5vw, 2rem);
    padding: clamp(1.75rem, 4vw, 2.5rem);
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    border-radius: 20px;
    border: 1px solid rgba(244, 203, 16, 0.2);
    box-shadow: 0 20px 48px rgba(15, 23, 42, 0.2);
}

.asb-casestudy .asb-case-cta-text h2 {
    margin: 0 0 0.5rem;
    font-size: clamp(1.35rem, 3vw, 1.75rem);
    font-weight: 700;
    color: #fff;
}

.asb-casestudy .asb-case-cta-text p {
    margin: 0;
    font-size: 0.95rem;
    color: #94a3b8;
    max-width: 52ch;
}

.asb-casestudy .asb-case-cta-actions {
    display: flex;
    flex-flow: row wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
}

.asb-casestudy .asb-case-cta-actions .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-shrink: 0;
    white-space: nowrap;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 10px;
    padding: 0.75rem 1.15rem;
}

.asb-casestudy .asb-case-cta-actions .btn-warning {
    background: var(--asb-gold);
    border-color: var(--asb-gold);
    color: var(--asb-navy);
}

.asb-casestudy .asb-case-cta-actions .btn-warning:hover {
    background: var(--asb-gold-dark);
    border-color: var(--asb-gold-dark);
    color: var(--asb-navy);
}

.asb-casestudy .asb-case-cta-actions .btn-outline-light {
    border-width: 1.5px;
}

/* Listing index */
.asb-casestudies-index .asb-case-hero--index .asb-case-hero-lead {
    max-width: 62ch;
}

.asb-casestudies-index .asb-case-index-grid {
    padding-top: clamp(3rem, 6vw, 4.5rem);
}

.asb-casestudies-index .asb-case-index-card {
    min-height: 100%;
}

.asb-casestudies-index .asb-case-index-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    margin: 0 0 1rem;
    font-size: 12px;
    color: var(--asb-muted);
}

.asb-casestudies-index .asb-case-index-meta strong {
    color: var(--asb-navy);
    font-weight: 700;
}

.asb-casestudies-index .asb-case-empty {
    margin: 0;
    padding: 2rem 1rem;
    color: var(--asb-muted);
}

/* Responsive */
@media (max-width: 991px) {
    .asb-casestudy .asb-case-hero-grid {
        grid-template-columns: 1fr;
    }

    .asb-casestudy .asb-case-visual {
        max-width: 520px;
    }

    .asb-casestudy .asb-case-panels {
        grid-template-columns: 1fr;
    }

    .asb-casestudy .asb-case-body-layout {
        grid-template-columns: 1fr;
    }

    .asb-casestudy .asb-case-rail {
        position: static;
    }

    .asb-casestudy .asb-case-cta-box {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .asb-casestudy .asb-case-cta-text p {
        max-width: none;
        margin-left: auto;
        margin-right: auto;
    }

    .asb-casestudy .asb-case-cta-actions {
        justify-content: center;
    }
}

@media (max-width: 575px) {
    .asb-casestudy .asb-case-hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .asb-casestudy .asb-case-hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .asb-casestudy .asb-case-cta-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .asb-casestudy .asb-case-cta-actions .btn {
        width: 100%;
    }
}