/* ============================================================
   CASE STUDY PAGE — Stripe-inspired long-form layout
   ============================================================ */

.cs-page {
    background: #fff;
    padding-top: 64px; /* nav height */
}

/* ---- Hero ---- */
.cs-hero {
    padding: 80px 40px 48px;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
}

.cs-hero-inner {
    max-width: 860px;
    margin: 0 auto;
    text-align: center;
}

.cs-hero-eyebrow {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--cta);
    margin-bottom: 20px;
}

.cs-hero-title {
    font-size: 44px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 36px;
}

.cs-gradient-text {
    background: linear-gradient(135deg, #E91E8C, #F47B3A, #F5C623);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cs-hero-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.cs-hero-logo {
    height: 48px;
    width: auto;
}

.cs-hero-stats {
    display: flex;
    gap: 28px;
}

.cs-hero-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-left: 28px;
    border-left: 2px solid var(--border);
}

.cs-hero-stat:first-child {
    border-left: none;
    padding-left: 0;
}

.cs-hero-stat-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -0.02em;
}

.cs-hero-stat-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ---- Hero Image ---- */
.cs-hero-image-section {
    padding: 0 40px;
    background: var(--bg-alt);
    padding-bottom: 64px;
}

.cs-hero-image-inner {
    max-width: 960px;
    margin: 0 auto;
}

.cs-hero-image {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 24px 80px rgba(0,0,0,0.12), 0 4px 20px rgba(0,0,0,0.06);
    display: block;
}

/* ---- Article Body ---- */
.cs-article {
    padding: 0 40px;
}

.cs-article-inner {
    max-width: 720px;
    margin: 0 auto;
    padding: 64px 0 80px;
}

/* Sections */
.cs-section {
    margin-bottom: 56px;
}

.cs-section-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

.cs-section p {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.cs-section p:last-child {
    margin-bottom: 0;
}

/* ---- Tools Grid ---- */
.cs-tools-grid {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-top: 24px;
}

.cs-tool-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.cs-tool-card strong {
    color: var(--text-primary);
}

.cs-tool-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* ---- Results Grid ---- */
.cs-results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 24px;
}

.cs-result-card {
    padding: 24px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.cs-result-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.cs-result-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--cta);
    margin-bottom: 12px;
}

.cs-result-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* ---- Testimonials ---- */
.cs-quote {
    margin: 0;
    padding: 32px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 12px;
    border-left: 3px solid var(--cta);
}

.cs-quote-featured {
    margin-bottom: 20px;
    border-left-width: 4px;
    border-image: linear-gradient(180deg, #E91E8C, #F47B3A, #F5C623) 1;
}

.cs-quote p {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
    font-style: italic;
}

.cs-quote footer {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cs-quote footer strong {
    font-size: 15px;
    font-style: normal;
    color: var(--text-primary);
}

.cs-quote footer span {
    font-size: 13px;
    font-style: normal;
    color: var(--text-muted);
}

.cs-quotes-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ---- Bottom CTA ---- */
.cs-cta {
    text-align: center;
    padding: 56px 0 0;
    border-top: 1px solid var(--border);
    margin-top: 16px;
}

.cs-cta-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.cs-cta-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* ---- Nav active state ---- */
.landing-nav-link.active {
    color: var(--text-primary);
    font-weight: 600;
}

/* ---- Footer on case study page ---- */
.cs-page .landing-footer {
    margin-top: 0;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .cs-hero {
        padding: 64px 24px 36px;
    }

    .cs-hero-title {
        font-size: 30px;
    }

    .cs-hero-stats {
        gap: 16px;
    }

    .cs-hero-stat {
        padding-left: 16px;
    }

    .cs-hero-stat-value {
        font-size: 22px;
    }

    .cs-hero-image-section {
        padding: 0 24px 48px;
    }

    .cs-hero-image {
        border-radius: 12px;
    }

    .cs-article {
        padding: 0 24px;
    }

    .cs-article-inner {
        padding: 48px 0 60px;
    }

    .cs-section-title {
        font-size: 22px;
    }

    .cs-section p {
        font-size: 16px;
    }

    .cs-results-grid {
        grid-template-columns: 1fr;
    }

    .cs-quotes-row {
        grid-template-columns: 1fr;
    }

    .cs-quote {
        padding: 24px;
    }

    .cs-quote p {
        font-size: 15px;
    }

    .cs-cta-title {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .cs-hero-title {
        font-size: 26px;
    }

    .cs-hero-meta {
        flex-direction: column;
        gap: 20px;
    }

    .cs-result-value {
        font-size: 26px;
    }
}