/**
 * Main Case Studies Section Block Styles
 *
 * A white header band (title + 4px accent line) above a coloured band listing
 * Case Study posts as filterable cards. Cards reuse the Case Studies Section
 * card treatment (image on gradient, title, service, client, gradient CTA bar).
 *
 * Reference design: child-theme-sections-screenshots/case-studies-section.png (card design)
 *
 * @package ACF Child Theme
 */

:root {
    --color-grey: #f3f3f3;
    --color-navy: #0d1e3b;
    --color-teal: #17abc1;
    --color-text: #252525;
    --color-blue: #004e95;
    --color-white: #ffffff;
    --font-primary: 'Montserrat', sans-serif;
}

/* Section wrapper
   ========================================================================== */
.main-cs-section {
    width: 100%;
    margin: 0;
    font-family: var(--font-primary), 'Montserrat', sans-serif;
}

.main-cs-section__container {
    max-width: var(--theme-normal-container-max-width, 1290px);
    width: var(--theme-container-width, 100%);
    margin: 0 auto;
    padding: 0 20px;
}

/* Header band (white)
   ========================================================================== */
.main-cs-section__header {
    background-color: var(--color-white, #ffffff);
    padding: 60px 0 40px;
    text-align: center;
}

.main-cs-section__title {
    margin: 0 0 18px 0;
    font-family: var(--font-primary), 'Montserrat', sans-serif;
    font-size: 30px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-navy, #0d1e3b);
}

.main-cs-section__line {
    display: block;
    width: 60px;
    height: 4px;
    margin: 0 auto;
    background-color: var(--color-teal, #17abc1);
}

/* Cases band (configurable background)
   ========================================================================== */
.main-cs-section__cases {
    padding: 50px 0 70px;
}

/* Category filter bar
   ========================================================================== */
.main-cs-section__filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: center;
    gap: 10px 14px;
    margin-bottom: 44px;
}

.main-cs-section__filter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 22px;
    font-family: var(--font-primary), 'Montserrat', sans-serif;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-navy, #0d1e3b);
    background-color: transparent;
    border: 0;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.main-cs-section__filter:hover,
.main-cs-section__filter:focus-visible {
    outline: none;
    color: var(--color-teal, #17abc1);
}

.main-cs-section__filter.is-active {
    color: var(--color-white, #ffffff);
    background-color: var(--color-navy, #0d1e3b);
}

.main-cs-section__filter.is-active:hover,
.main-cs-section__filter.is-active:focus-visible {
    color: var(--color-white, #ffffff);
}

/* Cards grid - three per row
   ========================================================================== */
.main-cs-section__grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.main-cs-section__card {
    display: flex;
}

.main-cs-section__card[hidden] {
    display: none;
}

.main-cs-section__card-link {
    display: flex;
    flex-direction: column;
    width: 100%;
    background-color: var(--color-white, #ffffff);
    border-radius: 10px;
    box-shadow: 0 6px 22px rgba(13, 30, 59, 0.1);
    overflow: hidden;
    text-decoration: none;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.main-cs-section__card-link:hover,
.main-cs-section__card-link:focus-visible {
    outline: none;
    box-shadow: 0 12px 30px rgba(13, 30, 59, 0.16);
    transform: translateY(-3px);
}

/* Image on gradient background
   ========================================================================== */
.main-cs-section__media {
    background: linear-gradient(135deg, var(--color-teal, #17abc1), var(--color-blue, #004e95));
    display: flex;
    align-items: flex-end;
    justify-content: center;
    min-height: 90px;
}

.main-cs-section__image {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 4px 4px 0 0;
}

/* Card body
   ========================================================================== */
.main-cs-section__body {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px 22px 26px;
}

.main-cs-section__card-title {
    margin: 0 0 12px 0;
    font-family: var(--font-primary), 'Montserrat', sans-serif;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-navy, #0d1e3b);
}

.main-cs-section__service {
    margin: 0 0 14px 0;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--color-teal, #17abc1);
}

.main-cs-section__client {
    margin: 0;
    font-size: 13px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-text, #252525);
}

/* Gradient CTA bar
   ========================================================================== */
.main-cs-section__cta {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    padding: 15px 20px;
    background: linear-gradient(to right, var(--color-teal, #17abc1), var(--color-blue, #004e95));
    color: var(--color-white, #ffffff);
    font-size: 14px;
    font-weight: 600;
    line-height: 1;
}

.main-cs-section__cta:hover,
.main-cs-section__cta:focus-visible {
    background: var(--color-navy, #0d1e3b);
    color: var(--color-white, #ffffff);
    outline: none;
}

.main-cs-section__cta-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 18px;
    height: 18px;
}

.main-cs-section__cta-icon svg {
    width: 100%;
    height: 100%;
    display: block;
}

.main-cs-section__empty {
    margin: 0;
    text-align: center;
    color: var(--color-text, #252525);
}

/* Responsive - Tablet (two per row)
   ========================================================================== */
@media (min-width: 769px) and (max-width: 1023px) {
    .main-cs-section__title {
        font-size: 26px;
    }

    .main-cs-section__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 26px;
    }
}

/* Responsive - Mobile (one per row)
   ========================================================================== */
@media (max-width: 768px) {
    .main-cs-section__header {
        padding: 45px 0 32px;
    }

    .main-cs-section__title {
        font-size: 22px;
    }

    .main-cs-section__cases {
        padding: 36px 0 50px;
    }

    .main-cs-section__filters {
        margin-bottom: 32px;
    }

    .main-cs-section__grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .main-cs-section__card {
        max-width: 420px;
        margin: 0 auto;
        width: 100%;
    }
}