/* ==========================================================================
   Case Study pages — portfolio/[project].html
   ========================================================================== */

.cs-page {
    padding-top: 4rem;
}

/* ── Hero text block ─────────────────────────────────────── */
.cs-hero {
    padding: clamp(3rem, 8vw, 6rem) 0 clamp(2rem, 5vw, 3rem);
}

.cs-hero-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.cs-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.75rem;
}

.cs-title {
    font-family: var(--font-display);
    font-size: var(--font-size-hero);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.05;
    margin-bottom: 1.25rem;
}

.cs-tagline {
    font-family: var(--font-mono);
    font-size: var(--font-size-h3);
    color: var(--text-secondary);
    max-width: 60ch;
}

/* ── Featured image ──────────────────────────────────────── */
.cs-hero-image {
    width: 100%;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.cs-hero-image img {
    width: 100%;
    height: clamp(300px, 55vh, 640px);
    object-fit: cover;
    display: block;
}

/* ── Overview (meta + brief) ─────────────────────────────── */
.cs-overview {
    max-width: 900px;
    margin: 0 auto;
    padding: clamp(3rem, 8vw, 5rem) var(--container-padding);
}

.cs-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 2.5rem;
    padding-bottom: 2.5rem;
    margin-bottom: 2.5rem;
    border-bottom: 1px solid var(--border-color);
}

.cs-meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.cs-meta-label {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.cs-meta-value {
    font-family: var(--font-display);
    font-size: var(--font-size-body);
    color: var(--clr-primary-orange);
}

.cs-section-title {
    font-family: var(--font-display);
    font-size: var(--font-size-h2);
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.cs-body-text {
    font-family: var(--font-mono);
    font-size: var(--font-size-body);
    line-height: var(--line-height-loose);
    color: var(--text-secondary);
    max-width: 65ch;
}

.cs-body-text + .cs-body-text {
    margin-top: 1rem;
}

/* ── Section wrapper ─────────────────────────────────────── */
.cs-section {
    padding: clamp(2rem, 6vw, 4rem) var(--container-padding);
    max-width: 900px;
    margin: 0 auto;
    border-top: 1px solid var(--border-color);
}

/* ── Image grid ──────────────────────────────────────────── */
.cs-images {
    padding: clamp(2rem, 5vw, 4rem) var(--container-padding);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.cs-image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
    gap: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.cs-image-grid--single {
    grid-template-columns: 1fr;
    max-width: 900px;
}

.cs-img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    display: block;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
}

/* ── Deliverables ────────────────────────────────────────── */
.cs-deliverables-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 1.5rem;
}

.cs-deliverables-list li {
    font-family: var(--font-mono);
    font-size: var(--font-size-small);
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.9rem;
}

/* ── Bottom nav ──────────────────────────────────────────── */
.cs-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: clamp(2rem, 5vw, 3.5rem) var(--container-padding);
    border-top: 1px solid var(--border-color);
    max-width: 1200px;
    margin: 0 auto;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
    .cs-title {
        font-size: clamp(2.5rem, 10vw, 4rem);
    }

    .cs-meta {
        gap: 1.5rem;
    }

    .cs-img {
        height: 280px;
    }

    .cs-nav {
        flex-direction: column;
    }
}