/* ===================================
   Opportunities Page Styles
   =================================== */

.opportunities-section {
    padding: 60px 0;
}

.opportunities-section h1 {
    font-size: 40px;
    margin-bottom: 20px;
}

.opportunities-section .title {
    margin-bottom: 16px;
}

.opportunities-lead {
    max-width: 850px;
    margin: 0 auto 36px auto;
    color: var(--color-text-primary);
    font-size: 17px;
    line-height: 1.7;
    text-align: center;
}

/* ----- Roles tabs (filing-cabinet style) ----- */

.opps-tabs-lead {
    margin: 0 0 18px;
    color: var(--color-text-secondary);
    font-size: 15px;
}

.opps-tabs-wrap {
    margin: 16px 0 8px;
}

.opps-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 0;
    margin: 0 0 -1px;
    list-style: none;
    align-items: flex-end;
    position: relative;
    z-index: 2;
}

.opps-tabs > li {
    margin: 0;
    padding: 0;
    list-style: none;
}

.opps-tab {
    display: inline-block;
    padding: 10px 18px;
    background: var(--color-bg-accent);
    border: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
    color: var(--color-heading);
    font-family: inherit;
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
    line-height: 1.2;
}

.opps-tab:hover,
.opps-tab:focus {
    background: var(--color-border);
    color: var(--color-link-hover);
    outline: none;
}

.opps-tab.is-active {
    background: #fff;
    border-bottom-color: #fff;
    color: var(--color-link-hover);
    transform: translateY(1px);
    z-index: 3;
}

.opps-tab-panels {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    border-top-left-radius: 0;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.opps-tab-panels:empty,
.opps-tab-panels:not(:has(:not([hidden]))) {
    /* Container collapses visually when no panel is active. */
    border: none;
    box-shadow: none;
    background: transparent;
}

.opps-tab-panel {
    padding: 24px 28px 28px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-size: 16px;
}

.opps-tab-panel[hidden] {
    display: none !important;
}

.opps-tab-panel h4 {
    margin: 22px 0 8px;
    font-size: 17px;
    font-weight: 700;
    color: var(--color-heading);
}

.opps-tab-panel h4:first-child {
    margin-top: 0;
}

.opps-tab-panel p {
    margin: 8px 0 14px;
}

/* ----- Fellowship cheat-sheet grid ----- */

.opps-fellow-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
    margin: 14px 0 16px;
}

.opps-fellow-card {
    padding: 14px 16px;
    background: var(--color-bg-accent);
    border-left: 3px solid var(--color-rule);
    border-radius: 6px;
}

.opps-fellow-card h5 {
    margin: 0 0 6px;
    font-size: 14px;
    font-weight: 700;
    color: var(--color-heading);
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.opps-fellow-card p {
    margin: 0;
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text-secondary);
}

/* ----- Disclosures (details/summary) ----- */

.opps-disclosure {
    margin: 10px 0;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-bg-accent);
    overflow: hidden;
}

.opps-disclosure[open] {
    background: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.opps-disclosure > summary {
    padding: 12px 44px 12px 18px;
    cursor: pointer;
    font-weight: 700;
    color: var(--color-heading);
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    list-style: none;
    position: relative;
    transition: background 0.15s ease, color 0.15s ease;
}

.opps-disclosure > summary::-webkit-details-marker {
    display: none;
}

.opps-disclosure > summary::after {
    content: "\25BE";
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-link);
    font-size: 14px;
    transition: transform 0.2s ease;
}

.opps-disclosure[open] > summary::after {
    transform: translateY(-50%) rotate(180deg);
}

.opps-disclosure > summary:hover,
.opps-disclosure > summary:focus {
    background: var(--color-border);
    color: var(--color-link-hover);
    outline: none;
}

.opps-disclosure[open] > summary {
    border-bottom: 1px solid var(--color-border);
}

.opps-disclosure > p,
.opps-disclosure > div {
    padding-left: 18px;
    padding-right: 18px;
}

.opps-disclosure > p:first-of-type {
    margin-top: 14px;
}

.opps-disclosure > *:last-child {
    margin-bottom: 14px;
}

/* ----- Track record ----- */

.opps-track-record {
    margin: 12px 0 0;
    padding: 16px 18px;
    background: var(--color-bg-accent);
    border-left: 3px solid var(--color-rule);
    border-radius: 6px;
}

.opps-track-stat {
    margin: 0 0 10px;
    font-size: 17px;
    color: var(--color-heading);
}

.opps-track-stat strong {
    color: var(--color-link);
}

/* ----- Photo gallery ----- */

.opps-gallery-section {
    margin: 56px 0 24px;
}

.opps-gallery-section h2 {
    margin: 0 0 12px;
}

.opps-gallery-lead {
    margin: 0 auto 28px;
    max-width: 700px;
    color: var(--color-text-secondary);
    text-align: center;
    line-height: 1.6;
}

.opps-gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
}

.opps-gallery-tile {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: 6px;
    cursor: zoom-in;
    background: var(--color-bg-accent);
    border: none;
    padding: 0;
}

.opps-gallery-tile img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.opps-gallery-tile:hover img {
    transform: scale(1.04);
}

.opps-gallery-tile-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 8px 10px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0));
    color: #fff;
    font-size: 13px;
    line-height: 1.3;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.opps-gallery-tile:hover .opps-gallery-tile-caption {
    opacity: 1;
}

.opps-gallery-empty {
    text-align: center;
    color: var(--color-text-secondary);
    font-style: italic;
}

/* ----- Lightbox ----- */

.opps-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 24px;
}

.opps-lightbox.is-open {
    display: flex;
}

.opps-lightbox-figure {
    max-width: 90vw;
    max-height: 90vh;
    margin: 0;
    text-align: center;
}

.opps-lightbox-img {
    max-width: 100%;
    max-height: 80vh;
    border-radius: 4px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.opps-lightbox-caption {
    margin-top: 12px;
    color: #f5f5f5;
    font-size: 15px;
}

.opps-lightbox-close {
    position: absolute;
    top: 16px;
    right: 20px;
    background: transparent;
    border: none;
    color: #fff;
    font-size: 38px;
    line-height: 1;
    cursor: pointer;
    padding: 4px 12px;
}

.opps-lightbox-close:hover,
.opps-lightbox-close:focus {
    color: #ccc;
}

/* ----- Existing opportunities-block (kept for trailing sections) ----- */

.opportunities-block {
    margin: 48px 0;
}

.opportunities-block h2 {
    margin-top: 0;
    margin-bottom: 14px;
}

.opportunities-block p,
.opportunities-block li {
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-size: 16px;
}

.opportunities-block p {
    margin: 10px 0 14px 0;
}

.opportunities-block ul {
    padding-left: 20px;
}

.opportunities-block ul li {
    margin: 6px 0;
}

/* ----- Additional LANL resources: 3-col centered list ----- */

#lanl-resources ul {
    list-style: disc inside;
    display: grid;
    grid-template-columns: repeat(3, max-content);
    gap: 10px 40px;
    justify-content: center;
    padding: 0;
    margin: 0 auto;
}

#lanl-resources li {
    margin: 0;
}

@media (max-width: 768px) {
    .opportunities-section {
        padding: 40px 0;
    }
    .opportunities-lead {
        font-size: 16px;
    }
    .opportunities-block {
        margin: 36px 0;
    }
    .opps-tab {
        padding: 8px 14px;
        font-size: 13px;
    }
    .opps-tab-panel {
        padding: 20px 18px 22px;
        font-size: 15px;
    }
    .opps-fellow-grid {
        grid-template-columns: 1fr;
    }
    .opps-gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 8px;
    }
    #lanl-resources ul {
        grid-template-columns: 1fr;
        gap: 8px 0;
    }
    .opportunities-section h1 {
        font-size: 32px;
    }
}