/* Case Studies — Index + Detail Pages */

/* ============================================
   SHARED: Hero Section
   ============================================ */
.case-studies-hero {
    padding: 8rem 0 3rem;
    text-align: center;
    background: var(--bg-secondary);
}

.case-studies-hero h1 {
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.15;
    margin-bottom: 1rem;
}

.case-studies-hero .hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ============================================
   INDEX PAGE: Card Grid
   ============================================ */
.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 0 4rem;
}

@media (min-width: 640px) {
    .case-studies-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .case-studies-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.case-study-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
}

.case-study-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(79, 70, 229, 0.2);
    color: inherit;
}

.case-study-card-logo {
    display: block;
    width: min(220px, 100%);
    height: 76px;
    object-fit: contain;
    object-position: center;
    margin: 0 auto 1.25rem;
    opacity: 0.9;
}

.case-study-card-metric {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.875rem;
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--accent-primary);
    background: rgba(79, 70, 229, 0.06);
    border: 1px solid rgba(79, 70, 229, 0.12);
    margin-bottom: 1rem;
    white-space: nowrap;
}

.case-study-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    min-height: 2.8em;
    margin-bottom: 0.75rem;
}

.case-study-card-summary {
    font-size: 0.9375rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.case-study-card-link {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--accent-primary);
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    transition: gap 0.2s ease;
}

.case-study-card:hover .case-study-card-link {
    gap: 0.625rem;
}

/* ============================================
   DETAIL PAGE: Breadcrumb
   ============================================ */
.case-study-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.case-study-breadcrumb a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
}

.case-study-breadcrumb a:hover {
    color: var(--accent-primary-hover);
}

.case-study-breadcrumb .separator {
    color: var(--text-subtle);
}

/* ============================================
   DETAIL PAGE: Hero
   ============================================ */
.case-study-hero {
    padding: 7rem 0 3rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
}

.case-study-hero-inner {
    max-width: 1100px;
    margin: 0 auto;
}


.case-study-hero h1 {
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
    margin-bottom: 1.5rem;
}

.case-study-hero-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.case-study-hero-company {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.case-study-hero-company img {
    height: 22px;
    width: auto;
    object-fit: contain;
}

.case-study-hero-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
}

/* ============================================
   DETAIL PAGE: Article Layout (article + sidebar)
   ============================================ */
.case-study-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    max-width: 1100px;
    margin: 0 auto;
    padding: 3rem 0 4rem;
    align-items: start;
}

@media (min-width: 1024px) {
    .case-study-layout {
        grid-template-columns: 1fr 280px;
        gap: 4rem;
    }
}

/* ============================================
   DETAIL PAGE: Article Body
   ============================================ */
.case-study-article {
    max-width: 720px;
}

.case-study-article h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.case-study-article p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.case-study-article p:last-child {
    margin-bottom: 0;
}

/* ============================================
   DETAIL PAGE: Pull Quotes
   ============================================ */
.case-study-pullquote {
    border-left: 4px solid var(--accent-primary);
    padding: 1.25rem 0 1.25rem 1.5rem;
    margin: 2rem 0;
}

.case-study-pullquote p {
    font-size: 1.125rem;
    font-style: italic;
    font-weight: 500;
    color: var(--accent-primary);
    line-height: 1.7;
    margin-bottom: 0.5rem;
}

.case-study-pullquote .pullquote-attribution {
    font-size: 0.875rem;
    font-style: normal;
    font-weight: 500;
    color: var(--text-muted);
}

/* ============================================
   DETAIL PAGE: Result Highlight Card
   ============================================ */
.case-study-result-card {
    background: rgba(79, 70, 229, 0.04);
    border: 1px solid rgba(79, 70, 229, 0.12);
    border-left: 4px solid var(--accent-primary);
    border-radius: 12px;
    padding: 2rem;
    margin: 2.5rem 0;
}

.case-study-result-card .result-stat {
    font-size: clamp(2rem, 5vw, 2.75rem);
    font-weight: 700;
    color: var(--accent-primary);
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.case-study-result-card .result-label {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ============================================
   DETAIL PAGE: Sidebar ("At a Glance")
   ============================================ */
.case-study-sidebar {
    position: sticky;
    top: 6rem;
}

.case-study-sidebar-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: 16px;
    padding: 1.75rem;
    box-shadow: var(--shadow-sm);
}

.case-study-sidebar-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-subtle);
    margin-bottom: 1.25rem;
}

.case-study-sidebar-row {
    margin-bottom: 1.25rem;
}

.case-study-sidebar-row:last-child {
    margin-bottom: 0;
}

.case-study-sidebar-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.case-study-sidebar-value {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.5;
}

.case-study-sidebar-value.metric-highlight {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.case-study-sidebar-divider {
    height: 1px;
    background: var(--border-subtle);
    margin: 1.25rem 0;
}

/* ============================================
   SHARED: CTA Section
   ============================================ */
.case-studies-cta {
    text-align: center;
    padding: 5rem 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    /* Absorb spare viewport height so footer stays visually attached */
    flex: 1 0 auto;
    display: flex;
    align-items: center;
}

.case-studies-cta > .container {
    width: 100%;
}

.case-studies-cta h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.case-studies-cta .cta-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.case-studies-cta .cta-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

/* ============================================
   DETAIL PAGE: Testimonial inline link
   ============================================ */
.case-study-inline-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-top: 0.5rem;
    transition: gap 0.2s ease;
}

.case-study-inline-link:hover {
    gap: 0.5rem;
    color: var(--accent-primary-hover);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .case-study-sidebar {
        position: static;
    }

    .case-study-layout {
        display: flex;
        flex-direction: column-reverse;
    }
}

@media (max-width: 768px) {
    .case-study-card-logo {
        height: 64px;
        width: min(180px, 100%);
    }

    .case-studies-hero {
        padding: 7rem 0 2rem;
    }

    .case-study-hero {
        padding: 6rem 0 2rem;
    }

    .case-study-article h2 {
        font-size: 1.25rem;
        margin-top: 2rem;
    }

    .case-study-article p {
        font-size: 1rem;
    }

    .case-study-pullquote p {
        font-size: 1rem;
    }

    .case-study-result-card {
        padding: 1.5rem;
    }
}