/* ============================================================
   BCT Global - Case Studies Page Styles
   Page-specific styles only. Requires base.css.
   ============================================================ */

/* --- Hero Section --- */
.cs-hero {
    text-align: center;
    padding: 6rem 0 3rem;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--brand-blue-light) 100%);
}

.cs-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.cs-hero .cs-hero-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* --- Case Studies Grid --- */
.cs-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding: 3rem 0 4rem;
}

/* --- Case Study Card --- */
.cs-card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cs-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.cs-card-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--brand-blue-light) 0%, var(--gray-100) 50%, var(--brand-teal-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-blue);
    font-size: 0.9rem;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}

.cs-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.cs-card:hover .cs-card-image img {
    transform: scale(1.05);
}

.cs-card-image span {
    display: none;
}

.cs-card-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-navy) 100%);
    opacity: 0.08;
}

.cs-card-body {
    padding: 1.75rem;
}

/* --- Industry Tag --- */
.cs-tag {
    display: inline-block;
    background-color: var(--brand-blue-light);
    color: var(--brand-blue);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    margin-bottom: 0.75rem;
}

/* --- Card Title --- */
.cs-card-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

/* --- Challenge / Solution Description --- */
.cs-card-desc {
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.25rem;
}

.cs-card-desc strong {
    color: var(--gray-800);
}

/* --- Results / Metrics Grid --- */
.cs-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1.25rem;
    background-color: var(--gray-50);
    border-radius: var(--radius-md);
}

.cs-metric {
    text-align: center;
}

.cs-metric-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--brand-blue);
    line-height: 1.2;
}

.cs-metric-label {
    display: block;
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
    line-height: 1.3;
}

/* --- Tech Tags --- */
.cs-tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.cs-tech-tag {
    display: inline-block;
    background-color: var(--gray-100);
    color: var(--gray-700);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
}

/* --- Read More Link --- */
.cs-read-more {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--brand-blue);
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    transition: gap 0.3s ease;
}

.cs-read-more:hover {
    gap: 0.7rem;
}

.cs-read-more svg {
    width: 1rem;
    height: 1rem;
}

/* --- Responsive --- */
@media (min-width: 768px) {
    .cs-hero h1 {
        font-size: 3rem;
    }

    .cs-hero .cs-hero-subtitle {
        font-size: 1.25rem;
    }

    .cs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .cs-hero h1 {
        font-size: 3.5rem;
    }

    .cs-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .cs-card-image {
        height: 180px;
    }
}

/* --- Small screen adjustments --- */
@media (max-width: 480px) {
    .cs-metrics {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .cs-metric {
        display: flex;
        align-items: baseline;
        gap: 0.5rem;
        text-align: left;
    }

    .cs-metric-value {
        font-size: 1.25rem;
    }

    .cs-metric-label {
        margin-top: 0;
    }

    .cs-card-body {
        padding: 1.25rem;
    }
}