/* =========================================================
   DLSU-CIVI ACTIVITIES PAGE
   File: public/css/activity.css

   Uses design tokens from index.css and follows the card
   styling established in news.css.
   ========================================================= */

.activity-page {
    width: 100%;
    min-width: 0;
    margin: 0 auto;
    padding: var(--spacing-lg, 28px) 0 var(--spacing-2xl, 54px);
    color: var(--civi-text);
    font-family: var(--font-body);
}

.activity-page *,
.activity-page *::before,
.activity-page *::after {
    box-sizing: border-box;
}

/* =========================================================
   PAGE HEADER
   ========================================================= */

.activity-page-header {
    margin-bottom: var(--spacing-2xl, 42px);
    text-align: left;
}

.activity-page .page_title,
.activity-page .page-title {
    margin: 0;
    padding: 0;
    /*color: var(--civi-navy);*/
    font-family: var(--font-heading);
    font-size: var(--font-page-title);
    font-weight: 700;
    line-height: 1.2;
    text-align: left;
}

.activity-page-description {
    max-width: 760px;
    margin: var(--spacing-md, 16px) 0 0;
    color: var(--civi-muted);
    font-size: var(--font-base);
    line-height: 1.8;
}

/* =========================================================
   ACTIVITY SECTIONS
   ========================================================= */

.activity-section {
    min-width: 0;
    margin-top: var(--spacing-2xl, 48px);
}

.activity-section + .activity-section {
    margin-top: var(--spacing-2xl, 58px);
    padding-top: var(--spacing-xl, 42px);
    border-top: 1px solid var(--civi-border);
}

.activity-section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--spacing-lg, 24px);
    margin-bottom: var(--spacing-lg, 22px);
}

.activity-page .section_title,
.activity-page .section-title {
    margin: 0;
    padding: 0;
    /*color: var(--civi-navy);*/
    font-family: var(--font-heading);
    font-size: var(--font-section-title);
    font-weight: 700;
    line-height: 1.3;
    text-align: left;
}

.activity-section-description {
    max-width: 720px;
    margin: var(--spacing-sm, 10px) 0 0;
    color: var(--civi-muted);
    font-size: var(--font-base-sm);
    line-height: 1.7;
}

/* =========================================================
   YEAR FILTER
   ========================================================= */

.activity-year-filter {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm, 10px);
    margin: var(--spacing-lg, 22px) 0 var(--spacing-lg, 24px);
}

.activity-year-btn {
    padding: var(--spacing-xs, 7px) var(--spacing-md, 14px);
    border: 1px solid var(--civi-border);
    border-radius: 999px;
    background: var(--civi-soft);
    color: var(--civi-text);
    font-family: var(--font-body);
    font-size: var(--font-sm);
    font-weight: 600;
    line-height: 1.4;
    cursor: pointer;
    transition:
        border-color 160ms ease,
        background-color 160ms ease,
        color 160ms ease,
        box-shadow 160ms ease;
}

.activity-year-btn:hover {
    border-color: var(--civi-border-strong);
    background: var(--civi-surface);
}

.activity-year-btn.active {
    border-color: var(--civi-navy);
    background: var(--civi-navy);
    color: var(--civi-surface);
}

.activity-year-btn:focus-visible {
    outline: 2px solid var(--civi-focus);
    outline-offset: 3px;
}

/* =========================================================
   ACTIVITY CARD GRID
   ========================================================= */

.activity-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
    gap: var(--spacing-lg, 22px);
}

.activity-card {
    display: flex;
    min-width: 0;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--civi-border);
    border-radius: 9px;
    background: var(--civi-surface);
    transition:
        border-color 160ms ease,
        box-shadow 160ms ease,
        transform 160ms ease;
}

.activity-card:hover {
    transform: translateY(-3px);
    border-color: var(--civi-border-strong);
    box-shadow: 0 10px 26px rgba(16, 43, 89, 0.08);
}

.activity-card-link {
    display: flex;
    min-width: 0;
    flex: 1;
    flex-direction: column;
    color: inherit;
    text-decoration: none;
}

.activity-card-link:hover,
.activity-card-link:focus-visible {
    text-decoration: none;
}

.activity-card-link:focus-visible {
    outline: 2px solid var(--civi-focus);
    outline-offset: -3px;
}

/* Card image */

.activity-card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--civi-soft);
}

.activity-card-image img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 200ms ease;
}

.activity-card:hover .activity-card-image img {
    transform: scale(1.025);
}

/* Card content */

.activity-card-content {
    display: flex;
    min-width: 0;
    flex: 1;
    flex-direction: column;
    align-items: flex-start;
    padding: var(--spacing-lg, 22px) var(--spacing-lg, 21px)
        var(--spacing-lg, 20px);
}

/* Category pills: same palette as news.css */

.activity-category {
    display: inline-block;
    max-width: 100%;
    padding: var(--spacing-xs, 6px) var(--spacing-sm, 10px);
    border-radius: 999px;
    font-size: var(--font-xs);
    font-weight: 700;
    letter-spacing: 0.045em;
    line-height: 1.25;
    text-transform: uppercase;
    overflow-wrap: anywhere;
}

.activity-category.category-lecture {
    background: #e0f5ee;
    color: #006d50;
}

.activity-category.category-workshop {
    background: #fbe9e9;
    color: #9b3037;
}

.activity-card-date {
    margin: var(--spacing-md, 14px) 0 var(--spacing-xs, 8px);
    color: var(--civi-muted);
    font-size: var(--font-xs);
    line-height: 1.5;
}

.activity-card h3 {
    margin: 0 0 var(--spacing-sm, 11px);
    color: var(--civi-navy);
    font-family: var(--font-heading);
    font-size: var(--font-md);
    font-weight: 700;
    line-height: 1.4;
    overflow-wrap: anywhere;
}

.activity-card-link:hover h3,
.activity-card-link:focus-visible h3 {
    color: var(--civi-green);
}

.activity-card-summary {
    display: -webkit-box;
    overflow: hidden;
    margin: 0 0 var(--spacing-lg, 20px);
    color: var(--civi-muted);
    font-size: var(--font-base-sm);
    line-height: 1.7;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
}

.activity-card-presenter {
    margin: 0 0 var(--spacing-md, 16px);
    color: var(--civi-muted);
    font-size: var(--font-sm);
    line-height: 1.6;
}

.activity-card-action {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs, 8px);
    margin-top: auto;
    padding-top: var(--spacing-xs, 2px);
    color: var(--civi-green);
    font-size: var(--font-base-sm);
    font-weight: 700;
}

/* =========================================================
   EMPTY STATE AND RESULTS
   ========================================================= */

.activity-empty {
    padding: var(--spacing-xl, 30px);
    border: 1px dashed var(--civi-border);
    border-radius: 8px;
    color: var(--civi-muted);
    text-align: center;
}

.activity-empty[hidden] {
    display: none !important;
}

.activity-results {
    margin: var(--spacing-md, 18px) 0 0;
    color: var(--civi-muted);
    font-size: var(--font-sm);
    line-height: 1.5;
}

.activity-results:empty {
    display: none;
}

/* =========================================================
   RESPONSIVE LAYOUT
   ========================================================= */

@media (max-width: 900px) {
    .activity-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: var(--spacing-md, 18px);
    }

    .activity-section + .activity-section {
        margin-top: var(--spacing-2xl, 48px);
        padding-top: var(--spacing-xl, 34px);
    }
}

@media (max-width: 580px) {
    .activity-page {
        padding-top: var(--spacing-md, 18px);
        padding-bottom: var(--spacing-xl, 34px);
    }

    .activity-page-header {
        margin-bottom: var(--spacing-xl, 32px);
    }

    .activity-page .page_title,
    .activity-page .page-title {
        font-size: var(--font-2xl);
        text-align: left;
    }

    .activity-page-description {
        margin-top: var(--spacing-sm, 12px);
        font-size: var(--font-base-sm);
        line-height: 1.75;
    }

    .activity-section {
        margin-top: var(--spacing-xl, 38px);
    }

    .activity-section + .activity-section {
        margin-top: var(--spacing-xl, 40px);
        padding-top: var(--spacing-lg, 30px);
    }

    .activity-section-heading {
        align-items: flex-start;
        flex-direction: column;
        gap: var(--spacing-sm, 10px);
        margin-bottom: var(--spacing-md, 18px);
    }

    .activity-page .section_title,
    .activity-page .section-title {
        font-size: var(--font-xl);
    }

    .activity-section-description {
        font-size: var(--font-base-sm);
    }

    .activity-year-filter {
        gap: var(--spacing-xs, 8px);
        margin: var(--spacing-md, 18px) 0 var(--spacing-md, 20px);
    }

    .activity-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md, 15px);
    }

    .activity-card-content {
        padding: var(--spacing-md, 19px);
    }

    .activity-card-summary {
        -webkit-line-clamp: unset;
    }
}

/* Reduced motion */

@media (prefers-reduced-motion: reduce) {
    .activity-year-btn,
    .activity-card,
    .activity-card-image img {
        transition: none;
    }

    .activity-card:hover,
    .activity-card:hover .activity-card-image img {
        transform: none;
    }
}