/* Paginas institucionales — Instituto Tecnologico de Tlahuac II
   Sistema compartido: portada, secciones, tarjetas y listas de documentos.
   Paleta: azul TecNM #1b396a, vino gob.mx #691c32, oro #bc955c.
*/

.inst {
    --inst-azul: var(--tecnm-blue);
    --inst-azul-osc: var(--tecnm-blue-dark);
    --inst-rgb: 27, 57, 106;
    --inst-oro: var(--gobmx-gold);
    --inst-radio: 0.85rem;
    --inst-borde: rgba(27, 57, 106, 0.12);
    --inst-sombra: 0 1px 2px rgba(16, 40, 73, 0.05), 0 8px 24px rgba(16, 40, 73, 0.07);
    --inst-sombra-alta: 0 2px 4px rgba(16, 40, 73, 0.08), 0 16px 36px rgba(16, 40, 73, 0.14);
}

/* Variantes de color por tema */
.inst.inst-vino {
    --inst-azul: var(--gobmx-wine);
    --inst-azul-osc: #4d1424;
    --inst-rgb: 105, 28, 50;
}

.inst.inst-verde {
    --inst-azul: #1f6b3a;
    --inst-azul-osc: #134526;
    --inst-rgb: 31, 107, 58;
}

.inst-contenedor {
    width: 100%;
    max-width: 1400px;
    margin-inline: auto;
    padding-inline: clamp(1rem, 3vw, 2.5rem);
}

/* ---------------------------------------------------------------- Portada */

.inst-hero {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 10% 120%, rgba(188, 149, 92, 0.3), transparent 55%),
        linear-gradient(135deg, var(--inst-azul), var(--inst-azul-osc));
    color: #ffffff;
    padding: clamp(2.25rem, 5vw, 3.5rem) 0;
}

.inst-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: radial-gradient(ellipse 75% 70% at 75% 0%, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 75% 70% at 75% 0%, #000 30%, transparent 75%);
    pointer-events: none;
}

.inst-hero > * {
    position: relative;
    z-index: 1;
}

.inst-hero-fila {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.inst-hero-texto {
    flex: 1 1 420px;
    min-width: 0;
}

.inst-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.25rem 0.8rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(188, 149, 92, 0.55);
    color: #f0d9b5;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.inst-hero h1 {
    margin: 0.8rem 0 0;
    font-size: clamp(1.7rem, 4vw, 2.6rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.01em;
}

.inst-hero-lead {
    margin: 0.85rem 0 0;
    max-width: 66ch;
    font-size: clamp(0.98rem, 1.5vw, 1.1rem);
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.86);
}

.inst-hero-icono {
    flex: 0 0 auto;
    width: 96px;
    height: 96px;
    border-radius: 1.3rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2.6rem;
    color: var(--inst-oro);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.inst-hero-icono img {
    max-width: 78%;
    max-height: 78%;
    object-fit: contain;
}

.inst-hero-datos {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin: 1.4rem 0 0;
    padding: 0;
    list-style: none;
}

.inst-hero-dato {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.85rem;
    border-radius: 0.6rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    font-size: 0.86rem;
}

.inst-hero-dato i {
    color: var(--inst-oro);
}

.inst-hero-dato a {
    color: #ffffff;
    font-weight: 700;
    text-decoration: none;
}

.inst-hero-dato a:hover,
.inst-hero-dato a:focus {
    text-decoration: underline;
}

/* Migas de pan */
.inst-migas {
    margin: 1.1rem 0 0;
    font-size: 0.88rem;
}

.inst-migas .breadcrumb {
    margin: 0;
}

.inst-migas a {
    color: var(--inst-azul);
    text-decoration: none;
}

.inst-migas a:hover,
.inst-migas a:focus {
    text-decoration: underline;
}

/* --------------------------------------------------------------- Secciones */

.inst-seccion {
    margin-top: clamp(2.25rem, 4vw, 3.25rem);
}

.inst-seccion-titulo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin: 0 0 1.15rem;
    padding-bottom: 0.55rem;
    border-bottom: 2px solid rgba(var(--inst-rgb), 0.18);
    color: var(--inst-azul);
    font-size: clamp(1.15rem, 2.2vw, 1.4rem);
    font-weight: 700;
}

.inst-seccion-titulo i {
    font-size: 0.95em;
    opacity: 0.85;
}

.inst-seccion-intro {
    margin: -0.4rem 0 1.2rem;
    max-width: 90ch;
    color: #4b5563;
    line-height: 1.65;
}

.inst-texto {
    max-width: 95ch;
    line-height: 1.75;
    text-align: justify;
    text-justify: inter-word;
}

/* ----------------------------------------------------------------- Tarjetas */

.inst-rejilla {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.inst-rejilla-2 {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.inst-tarjeta {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.2rem 1.25rem;
    background: #ffffff;
    border: 1px solid var(--inst-borde);
    border-radius: var(--inst-radio);
    box-shadow: var(--inst-sombra);
    transition: transform 200ms ease, box-shadow 200ms ease;
}

a.inst-tarjeta {
    color: inherit;
    text-decoration: none;
}

a.inst-tarjeta:hover,
a.inst-tarjeta:focus-visible,
.inst-tarjeta-elevable:hover {
    transform: translateY(-3px);
    box-shadow: var(--inst-sombra-alta);
}

a.inst-tarjeta:focus-visible {
    outline: 3px solid rgba(var(--inst-rgb), 0.45);
    outline-offset: 3px;
}

.inst-tarjeta-icono {
    width: 48px;
    height: 48px;
    border-radius: 0.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #ffffff;
    background: linear-gradient(140deg, var(--inst-azul), var(--inst-azul-osc));
}

.inst-tarjeta h3 {
    margin: 0.3rem 0 0;
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--inst-azul);
}

.inst-tarjeta p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #4b5563;
}

.inst-tarjeta-enlace {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: auto;
    padding-top: 0.5rem;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--inst-azul);
}

/* Declaracion destacada (mision / vision) */
.inst-declaracion {
    position: relative;
    margin: 0;
    padding: clamp(1.75rem, 4vw, 3rem) clamp(1.5rem, 5vw, 4rem);
    background: #ffffff;
    border: 1px solid var(--inst-borde);
    border-left: 6px solid var(--inst-oro);
    border-radius: var(--inst-radio);
    box-shadow: var(--inst-sombra);
}

.inst-declaracion::before {
    content: "\201C";
    position: absolute;
    top: -0.2rem;
    left: 1.2rem;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 6rem;
    line-height: 1;
    color: rgba(var(--inst-rgb), 0.12);
}

.inst-declaracion p {
    position: relative;
    margin: 0;
    font-size: clamp(1.15rem, 2.4vw, 1.55rem);
    line-height: 1.6;
    font-weight: 500;
    color: var(--inst-azul-osc);
}

.inst-declaracion footer {
    margin-top: 1.25rem;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--tecnm-gray);
}

/* Banda institucional "Orgullosamente Lobos" */
.inst-banda {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    margin-top: clamp(2.5rem, 5vw, 3.5rem);
    padding: clamp(1.4rem, 3vw, 2rem) clamp(1.4rem, 3.5vw, 2.4rem);
    border-radius: var(--inst-radio);
    background:
        radial-gradient(circle at 92% 8%, rgba(188, 149, 92, 0.26), transparent 45%),
        linear-gradient(135deg, var(--inst-azul), var(--inst-azul-osc));
    color: #ffffff;
}

.inst-banda-marca {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.inst-banda-marca img {
    width: 72px;
    height: 72px;
    object-fit: contain;
}

.inst-banda h2 {
    margin: 0;
    font-size: clamp(1.15rem, 2.4vw, 1.5rem);
    font-weight: 800;
}

.inst-banda p {
    margin: 0.25rem 0 0;
    font-size: 0.93rem;
    color: rgba(255, 255, 255, 0.82);
    max-width: 60ch;
}

.inst-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    border-radius: 999px;
    border: 1px solid transparent;
    font-size: 0.92rem;
    font-weight: 700;
    text-decoration: none;
    transition: background-color 160ms ease;
}

.inst-btn-oro {
    background: var(--inst-oro);
    color: #23180a;
}

.inst-btn-oro:hover,
.inst-btn-oro:focus {
    background: #d0ae76;
    color: #23180a;
}

.inst-btn-linea {
    border-color: rgba(255, 255, 255, 0.5);
    color: #ffffff;
}

.inst-btn-linea:hover,
.inst-btn-linea:focus {
    background: rgba(255, 255, 255, 0.14);
    color: #ffffff;
}

.inst-btn-azul {
    background: var(--inst-azul);
    color: #ffffff;
}

.inst-btn-azul:hover,
.inst-btn-azul:focus {
    background: var(--inst-azul-osc);
    color: #ffffff;
}

/* ------------------------------------------------------------- Documentos */

.inst-docs-grupo + .inst-docs-grupo {
    margin-top: 1.75rem;
}

.inst-docs-grupo-titulo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0 0 0.8rem;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--tecnm-gray);
}

.inst-docs-grupo-titulo::after {
    content: "";
    flex: 1 1 auto;
    height: 1px;
    background: var(--inst-borde);
}

.inst-docs {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
    gap: 0.75rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.inst-doc {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    height: 100%;
    padding: 0.85rem 0.95rem;
    background: #ffffff;
    border: 1px solid var(--inst-borde);
    border-radius: 0.7rem;
    box-shadow: 0 1px 2px rgba(16, 40, 73, 0.05);
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.inst-doc:hover {
    border-color: rgba(var(--inst-rgb), 0.35);
    box-shadow: var(--inst-sombra);
}

.inst-doc-icono {
    flex: 0 0 auto;
    width: 44px;
    height: 44px;
    border-radius: 0.6rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: #ffffff;
}

.inst-doc-icono.tipo-pdf { background: #b3261e; }
.inst-doc-icono.tipo-word { background: #2b579a; }
.inst-doc-icono.tipo-excel { background: #217346; }
.inst-doc-icono.tipo-ppt { background: #c43e1c; }
.inst-doc-icono.tipo-otro { background: var(--tecnm-gray); }

.inst-doc-cuerpo {
    flex: 1 1 auto;
    min-width: 0;
}

.inst-doc-titulo {
    display: block;
    margin: 0;
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--tecnm-text);
}

.inst-doc-meta {
    display: block;
    margin-top: 0.2rem;
    font-size: 0.75rem;
    color: var(--tecnm-gray);
}

.inst-doc-acciones {
    display: flex;
    flex: 0 0 auto;
    gap: 0.3rem;
}

.inst-doc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 0.5rem;
    border: 1px solid var(--inst-borde);
    background: #ffffff;
    color: var(--inst-azul);
    text-decoration: none;
    transition: background-color 160ms ease, color 160ms ease;
}

.inst-doc-btn:hover,
.inst-doc-btn:focus-visible {
    background: var(--inst-azul);
    border-color: var(--inst-azul);
    color: #ffffff;
}

/* Documento destacado */
.inst-doc.destacado {
    border-color: rgba(188, 149, 92, 0.6);
    background: linear-gradient(135deg, #fffdf8, #ffffff);
}

.inst-doc-sello {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    margin-left: 0.35rem;
    padding: 0.05rem 0.45rem;
    border-radius: 999px;
    background: var(--inst-oro);
    color: #23180a;
    font-size: 0.66rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    vertical-align: middle;
}

/* Visor de documentos */
.inst-visor .modal-content {
    border: 0;
    border-radius: 0.75rem;
    overflow: hidden;
}

.inst-visor .modal-header {
    background: linear-gradient(135deg, var(--tecnm-blue), var(--tecnm-blue-dark));
    color: #ffffff;
    border-bottom: 0;
}

.inst-visor .modal-title {
    font-size: 1.02rem;
    font-weight: 700;
}

.inst-visor .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

.inst-visor .modal-body {
    padding: 0;
    background: #eef1f6;
}

.inst-visor iframe {
    display: block;
    width: 100%;
    height: min(78vh, 860px);
    border: 0;
}

.inst-visor .modal-footer {
    justify-content: space-between;
    font-size: 0.82rem;
    color: var(--tecnm-gray);
}

/* ---------------------------------------------------------------- Aviso */

.inst-nota {
    display: flex;
    gap: 0.75rem;
    padding: 0.95rem 1.1rem;
    border-left: 4px solid var(--inst-oro);
    background: #fdf8f1;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    color: #5b4a2c;
}

.inst-nota i {
    color: #8a6a3a;
    margin-top: 0.15rem;
}

/* ----------------------------------------------------------- Adaptaciones */

@media (max-width: 767.98px) {
    .inst-hero-icono {
        display: none;
    }

    .inst-docs {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    .inst-tarjeta,
    .inst-doc,
    .inst-doc-btn {
        transition: none;
    }

    a.inst-tarjeta:hover,
    .inst-tarjeta-elevable:hover {
        transform: none;
    }
}

.high-contrast .inst-tarjeta,
.high-contrast .inst-doc,
.high-contrast .inst-declaracion {
    background: #111111 !important;
    color: #ffffff !important;
    border-color: #ffffff !important;
}