/* ── Variables ─────────────────────────────────── */
:root {
    --af-primary:   #1a5276;
    --af-primary-d: #154360;
    --af-accent:    #c0392b;
    --af-light:     #f4f6f8;
    --af-white:     #ffffff;
    --af-muted:     #6c757d;
    --af-border:    #dee2e6;
    --af-text:      #2c3e50;
}

/* ── Base ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
body {
    background-color: var(--af-light);
    font-family: 'Segoe UI', sans-serif;
    color: var(--af-text);
    overflow-x: hidden;
}

.bold { font-weight: 700; }

/* ── Navbar ────────────────────────────────────── */
#mainNav {
    background-color: var(--af-white);
    border-bottom: 3px solid var(--af-primary);
    box-shadow: 0 2px 8px rgba(0,0,0,.08);
}
#mainNav .navbar-brand {
    display: flex;
    align-items: center;
    gap: .6rem;
    color: var(--af-primary);
    font-weight: 700;
    font-size: .88rem;
    line-height: 1.25;
    text-decoration: none;
}
#mainNav .navbar-brand img {
    height: 48px;
    width: auto;
}
#mainNav .navbar-brand .brand-text {
    max-width: 220px;
}
#mainNav .navbar-toggler {
    border-color: var(--af-primary);
}
#mainNav .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231a5276' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
#mainNav .nav-link {
    color: var(--af-text);
    font-size: .85rem;
    font-weight: 500;
    padding: .5rem .75rem;
    transition: color .2s;
}
#mainNav .nav-link:hover,
#mainNav .nav-link.active {
    color: var(--af-primary);
    font-weight: 600;
}

/* ── Hero — tamaños compartidos (tocar aquí para cambiar todas las páginas) ── */
.hero,
.page-hero {
    padding: 2.2rem 1rem 1.8rem;
    color: #fff;
    text-align: center;
}
.hero h1,
.page-hero h1 {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 700;
    letter-spacing: -.3px;
}
.hero p,
.page-hero p {
    font-size: .9rem;
    opacity: .85;
    max-width: 480px;
    margin: .5rem auto 0;
}

/* ── Hero — estilos visuales propios ── */
.hero {
    background: linear-gradient(135deg, var(--af-primary) 0%, var(--af-primary-d) 100%);
}
.hero-accent { color: #aed6f1; }

/* ── Gallery grid ──────────────────────────────── */
.gallery-section { padding: 2rem 0 2rem; }

.gallery-grid {
    columns: auto 250px;
    column-gap: 10px;
}

.gallery-item {
    break-inside: avoid;
    margin-bottom: 10px;
    width: 250px;
    cursor: pointer;
    overflow: hidden;
    border-radius: 5px;
    position: relative;
    background: #dce3ea;
    box-shadow: 0 1px 6px rgba(0,0,0,.1);
    transition: transform .25s, box-shadow .25s;
}
.gallery-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,.18);
    z-index: 1;
}
.gallery-item img {
    width: 250px;
    height: auto;
    display: block;
    transition: transform .35s;
}
.gallery-item:hover img { transform: scale(1.04); }

/* ── Overlay ───────────────────────────────────── */
.gallery-item .overlay {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,.68));
    color: #fff;
    padding: .5rem .65rem;
    opacity: 0;
    transition: opacity .25s;
    line-height: 1.3;
}
.gallery-item:hover .overlay { opacity: 1; }
.overlay-title {
    font-weight: 600;
    font-size: .78rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.overlay-meta { opacity: .8; font-size: .72rem; }

/* ── Loader / end ──────────────────────────────── */
#loader {
    display: flex;
    justify-content: center;
    padding: 2rem 0;
}
#loader .spinner-border {
    color: var(--af-primary);
    width: 2.2rem;
    height: 2.2rem;
}
#end-message {
    text-align: center;
    padding: 1.5rem 0;
    color: var(--af-muted);
    font-size: .88rem;
    display: none;
}

/* ── Modal ─────────────────────────────────────── */
#imgModal .modal-content {
    background: var(--af-white);
    color: var(--af-text);
    border: none;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,.2);
}
#imgModal .modal-header {
    background: var(--af-primary);
    color: #fff;
    border-bottom: none;
    border-radius: 10px 10px 0 0;
    padding: .85rem 1.1rem .7rem;
}
#imgModal .modal-title { font-size: .95rem; font-weight: 700; color: #fff; }
#imgModal .modal-body  { padding: 0; }
#imgModal .btn-close   { filter: invert(1); }

#modal-img {
    width: 100%;
    max-height: 75vh;
    object-fit: contain;
    background: #1a1a1a;
}
.modal-info { padding: 1rem 1.1rem; background: #fff; }
.modal-info .info-row {
    display: flex;
    gap: .5rem;
    font-size: .82rem;
    margin-bottom: .38rem;
    align-items: flex-start;
    border-bottom: 1px solid var(--af-border);
    padding-bottom: .35rem;
}
.modal-info .info-row:last-child { border-bottom: none; }
.modal-info .row { border-bottom: 1px solid var(--af-border); }
.modal-info .row:last-child { border-bottom: none; }
.modal-info .info-cell {
    font-size: .82rem;
    padding: .38rem .5rem .35rem 0;
}
.modal-info .info-cell-inline {
    display: flex;
    gap: .35rem;
    align-items: baseline;
    flex-wrap: wrap;
}
.modal-info .col-6 + .col-6 .info-cell { padding-left: .75rem; border-left: 1px solid var(--af-border); }
.modal-info .info-label {
    color: var(--af-primary);
    font-weight: 600;
    min-width: 110px;
    flex-shrink: 0;
}
.modal-info .info-value {
    color: var(--af-text);
    word-break: break-word;
}
.modal-tags .badge {
    background: #d6eaf8;
    color: var(--af-primary);
    font-weight: 500;
    font-size: .72rem;
}

/* ── Section hero (páginas internas) ────────────── */
.page-hero {
    background: linear-gradient(135deg, var(--af-primary), var(--af-primary-d));
}

/* ── Collaborators ─────────────────────────────── */
.collab-card {
    border: 1px solid var(--af-border);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,.05);
    transition: transform .2s, box-shadow .2s;
    background: var(--af-white);
}
.collab-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,.1);
}
.collab-avatar {
    width: 48px; height: 48px;
    background: var(--af-primary);
    color: #fff;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.15rem;
    flex-shrink: 0;
}

/* ── Proyecto page ─────────────────────────────── */
.proyecto-icon {
    width: 36px; height: 36px;
    background: var(--af-primary);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}

/* ── Search ────────────────────────────────────── */
.search-box { max-width: 620px; margin: 0 auto 2rem; }
.search-box .form-control {
    border-radius: 30px 0 0 30px;
    border: 2px solid var(--af-primary);
    padding: .6rem 1.2rem;
}
.search-box .btn-search {
    border-radius: 0 30px 30px 0;
    background: var(--af-primary);
    color: #fff;
    border: 2px solid var(--af-primary);
    padding: .6rem 1.4rem;
}
.search-box .btn-search:hover { background: var(--af-accent); border-color: var(--af-accent); }

/* ── FAQ ───────────────────────────────────────── */
.accordion-button:not(.collapsed) { background-color: var(--af-primary); color: #fff; }
.accordion-button:focus { box-shadow: none; }

/* ── Contact ───────────────────────────────────── */
.contact-card {
    border: 1px solid var(--af-border);
    border-radius: 10px;
    box-shadow: 0 3px 15px rgba(0,0,0,.06);
    background: var(--af-white);
}
.contact-info-card {
    background: var(--af-primary);
    color: #fff;
    border-radius: 10px;
    padding: 2rem;
}
.contact-info-card h5 { font-weight: 700; color: #aed6f1; font-size: .8rem; text-transform: uppercase; letter-spacing: .5px; }
.contact-info-card a  { color: rgba(255,255,255,.85); text-decoration: none; }
.contact-info-card a:hover { color: #fff; }

/* ── Footer ────────────────────────────────────── */
.site-footer {
    background: var(--af-primary-d);
    color: rgba(255,255,255,.8);
    padding: 2.5rem 0 1.2rem;
}
.footer-link { color: rgba(255,255,255,.6); text-decoration: none; transition: color .2s; }
.footer-link:hover { color: #fff; }
.site-footer hr { border-color: rgba(255,255,255,.15); }

/* ══════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════ */
@media (max-width: 640px) {
    .gallery-section { padding: 1rem 0; }
    .gallery-grid { column-gap: 7px; }
    .gallery-item { margin-bottom: 7px; }
    .gallery-item .overlay { opacity: 1; }

    #imgModal .modal-dialog { margin: 0; max-width: 100%; }
    #imgModal .modal-content { border-radius: 0; min-height: 100vh; }
    #modal-img { max-height: 50vh; }
    .modal-info .info-label { min-width: 90px; }
}