/* ==========================================================================
   Instituto Tecnológico del Norte de Nayarit — hoja de estilos principal
   Identidad: guinda #611232, azul TecNM #1b396a, dorado #bc955c
   Bootstrap 5.3.x se carga antes que este archivo (public/vendor/bootstrap).
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tipografía institucional auto-hospedada (Montserrat variable, latin)
   -------------------------------------------------------------------------- */
@font-face {
    font-family: "Montserrat";
    font-style: normal;
    font-weight: 400 700;
    font-display: swap;
    src: url("../vendor/fonts/montserrat-latin-var.woff2") format("woff2");
}

/* --------------------------------------------------------------------------
   2. Variables y base
   -------------------------------------------------------------------------- */
:root {
    --itnn-guinda: #611232;
    --itnn-guinda-dark: #4a0d26;
    --itnn-navy: #1b396a;
    --itnn-navy-dark: #14294d;
    --itnn-navy-deep: #0d1b33;
    --itnn-gold: #bc955c;
    --itnn-gold-light: #d8ba8d;
    --itnn-gray: #5b6570;
    --itnn-text: #243040;
    --itnn-border: #e2e6ea;
    --itnn-bg-soft: #f4f6f9;

    --bs-body-font-family: "Montserrat", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    --bs-body-color: var(--itnn-text);
    --bs-body-color-rgb: 36, 48, 64;
    --bs-primary: #1b396a;
    --bs-primary-rgb: 27, 57, 106;
    --bs-link-color: #1b396a;
    --bs-link-color-rgb: 27, 57, 106;
    --bs-link-hover-color: #611232;
    --bs-link-hover-color-rgb: 97, 18, 50;
    --bs-border-color: #e2e6ea;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--bs-body-font-family);
    color: var(--itnn-text);
    line-height: 1.65;
    background-color: #fff;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--itnn-navy);
    font-weight: 700;
    line-height: 1.25;
}

a {
    text-underline-offset: 0.18em;
}

a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav-link:focus-visible,
.dropdown-item:focus-visible {
    outline: 3px solid var(--itnn-gold);
    outline-offset: 2px;
}

img {
    max-width: 100%;
    height: auto;
}

address {
    font-style: normal;
}

/* Iconos SVG en línea (sustituyen a Font Awesome). */
.itnn-icon {
    display: inline-block;
    flex: 0 0 auto;
    vertical-align: -0.125em;
}

/* Enlace de salto para lectores de pantalla / teclado */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 2000;
    background: #fff;
    color: var(--itnn-navy);
    font-weight: 700;
    padding: 0.75rem 1.25rem;
    border-radius: 0 0 0.5rem 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.skip-link:focus {
    left: 0;
}

/* --------------------------------------------------------------------------
   3. Botones institucionales y utilidades de color
   -------------------------------------------------------------------------- */
.btn {
    font-weight: 600;
    border-radius: 0.45rem;
}

.btn-gold,
a.btn-gold:link,
a.btn-gold:visited {
    --bs-btn-color: #1b2028;
    --bs-btn-bg: var(--itnn-gold);
    --bs-btn-border-color: var(--itnn-gold);
    --bs-btn-hover-color: #1b2028;
    --bs-btn-hover-bg: #cda76e;
    --bs-btn-hover-border-color: #cda76e;
    --bs-btn-active-color: #1b2028;
    --bs-btn-active-bg: #b18c55;
    --bs-btn-active-border-color: #b18c55;
    --bs-btn-focus-shadow-rgb: 188, 149, 92;
    font-weight: 700;
}

.btn-tecnm,
a.btn-tecnm:link,
a.btn-tecnm:visited {
    --bs-btn-color: #fff;
    --bs-btn-bg: var(--itnn-navy);
    --bs-btn-border-color: var(--itnn-navy);
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: var(--itnn-navy-dark);
    --bs-btn-hover-border-color: var(--itnn-navy-dark);
    --bs-btn-active-color: #fff;
    --bs-btn-active-bg: var(--itnn-navy-deep);
    --bs-btn-active-border-color: var(--itnn-navy-deep);
}

/* Compatibilidad con utilidades usadas por las páginas interiores. */
.text-tecnm { color: var(--itnn-navy) !important; }
.bg-tecnm { background-color: var(--itnn-navy) !important; color: #fff !important; }
.azultecnm { background-color: var(--itnn-navy); color: #fff; }
.titulos { color: var(--itnn-navy); }
.bg-gris { background-color: #e7e7e7; }

/* Ajustes de los componentes Bootstrap al color institucional. */
.btn-primary {
    --bs-btn-bg: var(--itnn-navy);
    --bs-btn-border-color: var(--itnn-navy);
    --bs-btn-hover-bg: var(--itnn-navy-dark);
    --bs-btn-hover-border-color: var(--itnn-navy-dark);
    --bs-btn-active-bg: var(--itnn-navy-deep);
    --bs-btn-active-border-color: var(--itnn-navy-deep);
    --bs-btn-disabled-bg: var(--itnn-navy);
    --bs-btn-disabled-border-color: var(--itnn-navy);
}

.btn-outline-primary {
    --bs-btn-color: var(--itnn-navy);
    --bs-btn-border-color: var(--itnn-navy);
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: var(--itnn-navy);
    --bs-btn-hover-border-color: var(--itnn-navy);
    --bs-btn-active-bg: var(--itnn-navy-dark);
    --bs-btn-active-border-color: var(--itnn-navy-dark);
}

.text-primary { color: var(--itnn-navy) !important; }

.link-primary {
    color: var(--itnn-navy) !important;
}

.card {
    border-color: var(--itnn-border);
}

/* --------------------------------------------------------------------------
   4. Cabecera: barra gob.mx, franja institucional y navegación principal
   -------------------------------------------------------------------------- */
.site-header {
    position: relative;
    z-index: 1030;
}

.gob-bar {
    background-color: var(--itnn-guinda);
}

.gob-bar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 62px;
}

.gob-bar__brand img {
    display: block;
    width: 170px;
    height: auto;
}

.gob-bar__links {
    display: flex;
    align-items: center;
    gap: 1.35rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.gob-bar a {
    color: #fff;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;
}

.gob-bar a:hover {
    color: #ffcd65;
    text-decoration: underline;
}

.gob-bar__search {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.gob-bar__search:hover {
    border-color: #ffcd65;
}

/* Franja SEP · TecNM · ITNN (sustituye a la antigua tabla) */
.ids-band {
    background-color: #fff;
    border-bottom: 1px solid var(--itnn-border);
    padding: 0.7rem 0;
}

.ids-band__inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    max-width: 720px;
}

.ids-band__item {
    display: block;
    text-decoration: none;
}

.ids-band__item img {
    display: block;
    width: 100%;
    height: auto;
}

.ids-band__item--sep { width: 273px; }
.ids-band__item--tecnm { width: 172px; }
.ids-band__item--itnn { width: 147px; }

.goldenborder {
    border-left: 1px solid var(--itnn-gold);
    padding-left: 1.6rem;
}

/* Navegación principal */
.site-nav {
    background-color: var(--itnn-navy);
    box-shadow: 0 2px 10px rgba(13, 27, 51, 0.2);
    position: sticky;
    top: 0;
    padding-block: 0.2rem;
}

.site-nav .navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    color: #fff;
    text-decoration: none;
    padding-block: 0.35rem;
}

.site-nav__mascot {
    width: 62px;
    height: auto;
    flex: 0 0 auto;
}

.site-nav__brand-text {
    color: #fff;
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.site-nav__brand-sub {
    display: block;
    margin-top: 0.15rem;
    color: #d7e0ee;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0;
    text-transform: none;
}

.site-nav .navbar-nav {
    gap: 0.1rem;
}

.site-nav .nav-link {
    color: #fff;
    font-size: 0.92rem;
    font-weight: 600;
    padding: 0.62rem 0.78rem;
    border: 0;
    border-radius: 0.35rem;
    background: transparent;
    text-decoration: none;
}

.site-nav .nav-link:hover,
.site-nav .nav-link:focus-visible {
    color: #ffcd65;
    background-color: rgba(255, 255, 255, 0.08);
}

.site-nav .nav-link.active,
.site-nav .nav-link[aria-current="page"] {
    color: #ffcd65;
    box-shadow: inset 0 -3px 0 var(--itnn-gold);
}

.site-nav .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.5);
    padding: 0.45rem 0.6rem;
}

.site-nav .navbar-toggler:focus-visible {
    outline: 3px solid var(--itnn-gold);
    outline-offset: 2px;
    box-shadow: none;
}

.site-nav .dropdown-menu {
    min-width: 16rem;
    padding: 0.4rem;
    background-color: var(--itnn-navy-dark);
    border: 0;
    border-top: 3px solid var(--itnn-gold);
    border-radius: 0 0 0.45rem 0.45rem;
    box-shadow: 0 12px 28px rgba(13, 27, 51, 0.3);
}

.site-nav .dropdown-item {
    color: #fff;
    font-size: 0.9rem;
    padding: 0.55rem 0.75rem;
    border-radius: 0.3rem;
    white-space: normal;
}

.site-nav .dropdown-item:hover,
.site-nav .dropdown-item:focus {
    color: #ffcd65;
    background-color: rgba(255, 255, 255, 0.1);
}

.site-nav .dropdown-item.active,
.site-nav .dropdown-item[aria-current="page"] {
    color: #ffcd65;
    background-color: rgba(255, 255, 255, 0.08);
    font-weight: 700;
}

.site-nav .dropdown-divider {
    border-top-color: rgba(255, 255, 255, 0.22);
    margin: 0.35rem 0.25rem;
}

.nav-link--cta {
    border: 1px solid var(--itnn-gold) !important;
    color: var(--itnn-gold-light) !important;
}

.nav-link--cta:hover {
    background-color: var(--itnn-gold) !important;
    color: var(--itnn-navy-deep) !important;
}

/* --------------------------------------------------------------------------
   5. Contenido principal
   -------------------------------------------------------------------------- */
.site-main {
    min-height: 55vh;
}

.site-main:focus {
    outline: none;
}

.pageHome {
    width: 100%;
}

/* Páginas interiores: evita desbordes horizontales en filas sin contenedor. */
.pageHome > .row {
    margin-left: 0;
    margin-right: 0;
}

.section {
    padding-block: clamp(2.5rem, 5vw, 4rem);
}

.section--welcome { background-color: #fff; }

.section--oferta { background-color: var(--itnn-bg-soft); }

.section--convocatoria { background-color: #fff; }

.section--contacto { background-color: #fff; }

.section-header {
    max-width: 760px;
    margin-bottom: 2rem;
}

.section-title {
    position: relative;
    margin-bottom: 0.9rem;
    padding-bottom: 0.65rem;
    font-size: clamp(1.45rem, 2.6vw, 2rem);
}

.section-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 56px;
    height: 4px;
    background-color: var(--itnn-gold);
}

.section-subtitle {
    margin-bottom: 0;
    color: var(--itnn-gray);
    font-size: 1.02rem;
}

/* --------------------------------------------------------------------------
   6. Portada: hero con carrusel ligero
   -------------------------------------------------------------------------- */
.hero {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    background-color: var(--itnn-navy-deep);
    color: #fff;
}

.hero__carousel {
    height: clamp(380px, 46vw, 540px);
}

.hero__carousel .carousel-inner,
.hero__carousel .carousel-item {
    height: 100%;
}

.hero__img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* Veladura para garantizar el contraste del texto sobre cualquier fotografía. */
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    background-image:
        linear-gradient(90deg, rgba(9, 20, 38, 0.9) 0%, rgba(9, 20, 38, 0.66) 48%, rgba(9, 20, 38, 0.18) 100%),
        linear-gradient(0deg, rgba(9, 20, 38, 0.55) 0%, rgba(9, 20, 38, 0) 45%);
}

.hero__content {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-block: 2rem;
    pointer-events: none;
}

.hero__content a {
    pointer-events: auto;
}

.hero__eyebrow {
    margin-bottom: 0.75rem;
    color: #f0d9a8;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.hero__title {
    max-width: 22ch;
    margin-bottom: 1rem;
    color: #fff;
    font-size: clamp(1.85rem, 4.4vw, 3.2rem);
    line-height: 1.1;
    text-shadow: 0 2px 18px rgba(0, 0, 0, 0.45);
}

.hero__lead {
    max-width: 56ch;
    margin-bottom: 1.5rem;
    color: #e9eef6;
    font-size: clamp(1rem, 1.35vw, 1.18rem);
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.4);
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.hero .btn-outline-light {
    --bs-btn-border-color: rgba(255, 255, 255, 0.75);
    --bs-btn-color: #fff;
    --bs-btn-hover-bg: #fff;
    --bs-btn-hover-color: var(--itnn-navy);
    --bs-btn-hover-border-color: #fff;
}

.hero__control {
    position: absolute;
    top: auto;
    bottom: 1.35rem;
    z-index: 4;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.45);
    border-radius: 50%;
    background-color: rgba(9, 20, 38, 0.55);
    opacity: 0.95;
}

.hero__control.carousel-control-prev {
    left: 1rem;
}

.hero__control.carousel-control-next {
    right: 1rem;
}

.hero__control:hover,
.hero__control:focus-visible {
    background-color: rgba(9, 20, 38, 0.8);
    opacity: 1;
}

.hero__control-icon {
    width: 1.5rem;
    height: 1.5rem;
    background-size: 100% 100%;
}

.hero__indicators {
    z-index: 4;
    bottom: 0.35rem;
    width: auto;
    margin: 0 auto;
    padding: 0.35rem 0.65rem;
    border-radius: 2rem;
    background-color: rgba(9, 20, 38, 0.45);
}

.hero__indicators [data-bs-target] {
    width: 34px;
    height: 4px;
    margin: 0 4px;
    border: 0;
    border-radius: 2px;
    background-color: #fff;
    opacity: 0.75;
}

.hero__indicators [data-bs-target].active {
    background-color: var(--itnn-gold);
    opacity: 1;
}

/* --------------------------------------------------------------------------
   7. Bienvenida
   -------------------------------------------------------------------------- */
.welcome-panel {
    padding: 2rem;
    border-radius: 0.85rem;
    background-image: linear-gradient(135deg, var(--itnn-navy) 0%, var(--itnn-navy-deep) 100%);
    color: #fff;
    box-shadow: 0 18px 40px rgba(13, 27, 51, 0.2);
}

.welcome-panel__title {
    margin-bottom: 1rem;
    color: #ffcd65;
    font-size: 1.08rem;
    font-weight: 700;
}

.welcome-list {
    display: grid;
    gap: 0.8rem;
    margin: 0 0 1.5rem;
    padding: 0;
    list-style: none;
}

.welcome-list li {
    display: flex;
    gap: 0.6rem;
    align-items: flex-start;
    color: #eef2f8;
    font-size: 0.95rem;
}

.welcome-list .itnn-icon {
    flex: 0 0 auto;
    margin-top: 0.2rem;
    color: #ffcd65;
}

.welcome-panel .btn-tecnm {
    --bs-btn-color: #1b2028;
    --bs-btn-bg: var(--itnn-gold);
    --bs-btn-border-color: var(--itnn-gold);
    --bs-btn-hover-color: #1b2028;
    --bs-btn-hover-bg: #cda76e;
    --bs-btn-hover-border-color: #cda76e;
    --bs-btn-active-bg: #b18c55;
    --bs-btn-active-border-color: #b18c55;
}

/* --------------------------------------------------------------------------
   8. Oferta educativa
   -------------------------------------------------------------------------- */
.career-card {
    display: flex;
    flex-direction: column;
    padding: 1.75rem;
    border: 1px solid var(--itnn-border);
    border-top: 4px solid var(--itnn-gold);
    border-radius: 0.75rem;
    background-color: #fff;
    box-shadow: 0 4px 14px rgba(13, 27, 51, 0.06);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.career-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(13, 27, 51, 0.14);
}

.career-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    margin-bottom: 1rem;
    border-radius: 0.75rem;
    background-color: rgba(27, 57, 106, 0.08);
    color: var(--itnn-navy);
}

.career-card__title {
    margin-bottom: 0.35rem;
    font-size: 1.13rem;
    line-height: 1.35;
}

.career-card__modality {
    margin-bottom: 0.75rem;
    color: var(--itnn-guinda);
    font-size: 0.85rem;
    font-weight: 700;
}

.career-card__text {
    flex: 1 1 auto;
    margin-bottom: 0;
    color: #4a5568;
    font-size: 0.95rem;
}

.career-card__link {
    display: inline-flex;
    align-items: center;
    margin-top: 1.1rem;
    color: var(--itnn-navy);
    font-weight: 700;
    text-decoration: none;
}

.career-card__link:hover {
    color: var(--itnn-guinda);
    text-decoration: underline;
}

/* --------------------------------------------------------------------------
   9. Convocatoria (CTA)
   -------------------------------------------------------------------------- */
.section--cta {
    background-image: linear-gradient(120deg, var(--itnn-guinda) 0%, var(--itnn-guinda-dark) 100%);
    color: #fff;
}

.cta-convocatoria {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.cta-convocatoria__eyebrow {
    margin-bottom: 0.4rem;
    color: #f0d9a8;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.cta-convocatoria__title {
    margin-bottom: 0.5rem;
    color: #fff;
    font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.cta-convocatoria__text {
    max-width: 62ch;
    margin-bottom: 0;
    color: #f4e6ea;
}

.cta-convocatoria__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.section--cta .btn-outline-light {
    --bs-btn-border-color: rgba(255, 255, 255, 0.75);
    --bs-btn-color: #fff;
    --bs-btn-hover-bg: #fff;
    --bs-btn-hover-color: var(--itnn-guinda);
    --bs-btn-hover-border-color: #fff;
}

/* --------------------------------------------------------------------------
   10. Contacto y redes sociales
   -------------------------------------------------------------------------- */
.contact-list {
    display: grid;
    gap: 1rem;
    margin: 0 0 1.5rem;
    padding: 0;
    list-style: none;
}

.contact-list li {
    display: flex;
    gap: 0.85rem;
    align-items: flex-start;
}

.contact-list__icon {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(27, 57, 106, 0.08);
    color: var(--itnn-navy);
}

.social-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.social-card {
    display: flex;
    gap: 0.85rem;
    align-items: center;
    padding: 1rem 1.15rem;
    border: 1px solid var(--itnn-border);
    border-radius: 0.75rem;
    background-color: #fff;
    color: var(--itnn-navy);
    text-decoration: none;
    transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.social-card:hover {
    border-color: var(--itnn-navy);
    background-color: var(--itnn-navy);
    color: #fff;
}

.social-card small {
    color: var(--itnn-gray);
    font-size: 0.78rem;
    word-break: break-word;
}

.social-card:hover small {
    color: #dbe4ef;
}

.map-link img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 0.75rem;
}

/* --------------------------------------------------------------------------
   11. Pie de página institucional
   -------------------------------------------------------------------------- */
.site-footer {
    padding-top: 2.5rem;
    background-color: var(--itnn-guinda);
    color: #fff;
}

.site-footer a {
    color: #fff;
    text-decoration: none;
}

.site-footer a:hover {
    color: #ffcd65;
    text-decoration: underline;
}

.footer-heading {
    margin-bottom: 0.9rem;
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
}

.footer-address {
    margin-bottom: 0.9rem;
    color: #f4e6ea;
    font-size: 0.92rem;
    line-height: 1.7;
}

.footer-visits {
    margin-bottom: 1rem;
    color: #f4e6ea;
    font-size: 0.92rem;
}

.footer-visits strong {
    color: #ffcd65;
    font-size: 1.05rem;
}

.footer-sep {
    display: inline-block;
    padding: 0.45rem 0.75rem;
    border-radius: 0.5rem;
    background-color: #fff;
}

.footer-sep img {
    display: block;
    width: 200px;
    max-width: 100%;
    height: auto;
}

.footer-gobmx {
    display: inline-block;
    margin-top: 1rem;
}

.footer-gobmx img {
    display: block;
    width: 255px;
    max-width: 100%;
    height: auto;
}

.footer-list {
    display: grid;
    gap: 0.55rem;
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: 0.92rem;
}

.footer-list a {
    display: inline-flex;
    gap: 0.5rem;
    align-items: center;
}

.footer-list .itnn-icon {
    flex: 0 0 auto;
    opacity: 0.9;
}

.footer-list--small {
    font-size: 0.85rem;
}

.footer-social {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.footer-social a {
    display: inline-flex;
    gap: 0.5rem;
    align-items: center;
    padding: 0.45rem 0.8rem;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 2rem;
    font-size: 0.9rem;
}

.footer-social a:hover {
    border-color: #ffcd65;
    text-decoration: none;
}

.footer-small {
    color: #f4e6ea;
    font-size: 0.85rem;
}

.footer-bottom {
    margin-top: 2rem;
    padding: 1.25rem 0 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.25);
    text-align: center;
}

.footer-legal {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
    justify-content: center;
    margin: 0 0 0.75rem;
    padding: 0;
    list-style: none;
    font-size: 0.8rem;
}

.footer-copyright {
    margin: 0;
    color: #f0dde4;
    font-size: 0.8rem;
}

.footer-pleca {
    height: 33px;
    margin-top: 1rem;
    background-image: url("../images/optimized/pleca.webp");
    background-repeat: repeat-x;
    background-position: center;
    background-size: auto 33px;
}

/* --------------------------------------------------------------------------
   12. Compatibilidad con las vistas interiores
   -------------------------------------------------------------------------- */
.center-grid {
    display: flex;
    justify-content: center;
    width: 100%;
}

.center-grid iframe {
    max-width: 100%;
    border: 0;
}

.pdf-container {
    padding: 1.5rem 1rem;
}

.pdf-frame {
    width: 100%;
    height: 75vh;
    border: 0;
    border-radius: 0.5rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.img-tec-footer {
    width: 100%;
    height: auto;
    border-radius: 0.5rem;
}

.img-banner {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.convocatorias {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: space-around;
    margin-bottom: 1.5rem;
}

.mih1, .mih2, .mih3, .mih4, .mih5, .mih6 {
    margin-bottom: 0.1em;
    font-weight: 700;
}

/* --------------------------------------------------------------------------
   13. Adaptación a pantallas pequeñas
   -------------------------------------------------------------------------- */
@media (max-width: 991.98px) {
    .site-nav .navbar-collapse {
        margin-top: 0.5rem;
        padding: 0.5rem 0.75rem 1rem;
        border-radius: 0.5rem;
        background-color: var(--itnn-navy-dark);
    }

    .site-nav .dropdown-menu {
        position: static;
        padding-left: 0.75rem;
        border: 0;
        border-radius: 0;
        background-color: transparent;
        box-shadow: none;
    }

    .site-nav .dropdown-item {
        padding-left: 1rem;
    }

    .site-nav .nav-link {
        padding: 0.7rem 0.65rem;
    }

    .site-nav .nav-link--cta {
        display: inline-block;
        margin-top: 0.5rem;
    }

    .hero__carousel {
        height: 470px;
    }
}

@media (max-width: 767.98px) {
    .gob-bar__links li:not(:last-child) {
        display: none;
    }

    .gob-bar__brand img {
        width: 145px;
    }

    .gob-bar__inner {
        min-height: 52px;
    }

    .ids-band__inner {
        flex-wrap: wrap;
        gap: 0.5rem 1rem;
    }

    .ids-band__item--sep { width: min(52vw, 230px); }
    .ids-band__item--tecnm { width: min(34vw, 140px); }
    .ids-band__item--itnn { width: 96px; }

    .goldenborder {
        padding-left: 1rem;
    }

    .site-nav__brand-text {
        font-size: 0.82rem;
    }

    .site-nav__mascot {
        width: 50px;
    }

    .hero__carousel {
        height: 490px;
    }

    .hero__title {
        max-width: 100%;
        font-size: clamp(1.7rem, 7vw, 2.4rem);
    }

    .hero__lead {
        font-size: 1rem;
    }

    .cta-convocatoria {
        gap: 1.25rem;
    }

    .footer-legal {
        font-size: 0.76rem;
    }
}

@media (max-width: 575.98px) {
    .hero__carousel {
        height: 510px;
    }

    .hero__eyebrow {
        font-size: 0.7rem;
        letter-spacing: 0.1em;
    }

    .hero__actions .btn {
        width: 100%;
    }

    .welcome-panel {
        padding: 1.5rem;
    }

    .ids-band__item--itnn {
        width: 92px;
    }

    .goldenborder:last-of-type {
        border-left: 0;
        padding-left: 0;
    }
}

/* --------------------------------------------------------------------------
   14. Accesibilidad: movimiento reducido e impresión
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

@media print {
    .skip-link,
    .gob-bar,
    .site-nav,
    .site-footer,
    .hero__control,
    .hero__indicators {
        display: none !important;
    }

    body {
        color: #000;
    }
}

/* ==========================================================================
   Visor de documentos convertidos a HTML (Convocatoria Docente y Reglamento)
   ========================================================================== */
.doc-visor {
    max-width: 1100px;
}

.doc-visor .breadcrumb {
    --bs-breadcrumb-divider-color: var(--itnn-gray);
}

.doc-toolbar {
    position: relative;
}

.doc-search__status {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.925rem;
    color: var(--itnn-gray);
}

.doc-search__nav {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.doc-results {
    list-style: none;
    margin: 1rem 0 0;
    padding: 0;
    max-height: 340px;
    overflow-y: auto;
    border-top: 1px solid var(--itnn-border);
}

.doc-result {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    width: 100%;
    padding: 0.6rem 0.25rem;
    border: 0;
    border-bottom: 1px dashed var(--itnn-border);
    background: transparent;
    text-align: left;
    color: inherit;
}

.doc-result:hover,
.doc-result:focus-visible {
    background-color: var(--itnn-bg-soft);
    outline: none;
}

.doc-result__page {
    font-weight: 600;
    color: var(--itnn-navy);
    font-size: 0.9rem;
}

.doc-result__snippet {
    color: var(--itnn-gray);
    font-size: 0.9rem;
    line-height: 1.5;
}

.doc-pages {
    margin-top: 0.5rem;
}

.doc-page {
    max-width: 940px;
    margin: 0 auto 1.75rem;
    border: 1px solid var(--itnn-border);
    border-radius: 0.6rem;
    background: #fff;
    box-shadow: 0 4px 18px rgb(27 57 106 / 8%);
    overflow: hidden;
    scroll-margin-top: 1rem;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.doc-page--active {
    border-color: var(--itnn-gold);
    box-shadow: 0 0 0 3px var(--itnn-gold-light), 0 6px 20px rgb(27 57 106 / 16%);
}

.doc-page__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.45rem 0.9rem;
    border-bottom: 1px solid var(--itnn-border);
    background-color: var(--itnn-bg-soft);
    color: var(--itnn-gray);
    font-size: 0.8rem;
}

.doc-page__anchor {
    color: var(--itnn-gray);
    text-decoration: none;
    font-weight: 600;
}

.doc-page__anchor:hover,
.doc-page__anchor:focus-visible {
    color: var(--itnn-navy);
}

.doc-page__image {
    display: block;
    width: 100%;
    height: auto;
    background: #fff;
}

.doc-page__text {
    border-top: 1px solid var(--itnn-border);
    font-size: 0.9rem;
}

.doc-page__text summary {
    cursor: pointer;
    padding: 0.65rem 0.9rem;
    color: var(--itnn-navy);
    font-weight: 600;
}

.doc-page__text summary:hover {
    background-color: var(--itnn-bg-soft);
}

.doc-page__text-body {
    max-height: 460px;
    overflow-y: auto;
    padding: 0 0.9rem 1rem;
    color: var(--itnn-text);
    white-space: pre-line;
    overflow-wrap: anywhere;
}

.doc-hit {
    padding: 0 0.1em;
    border-radius: 0.15em;
    background-color: #ffe08a;
    color: inherit;
}

.doc-hit--current {
    background-color: #ffc247;
    outline: 2px solid #b7791f;
}

.doc-page-jump {
    width: auto;
}

@media (max-width: 575.98px) {
    .doc-search__status {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.35rem;
    }

    .doc-results {
        max-height: 240px;
    }

    .doc-page__text-body {
        max-height: 320px;
        padding-inline: 0.75rem;
    }
}

@media print {
    .doc-toolbar,
    .doc-page__text,
    .doc-visor .breadcrumb,
    .doc-visor .btn {
        display: none !important;
    }

    .doc-page {
        max-width: none;
        margin: 0;
        border: 0;
        border-radius: 0;
        box-shadow: none;
        break-after: page;
    }

    .doc-page__header {
        border-bottom: 0;
        background: none;
    }
}

/* ==========================================================================
   15. Portada: intro institucional y carrusel informativo
   ========================================================================== */
.home-intro {
    padding: clamp(2rem, 5vw, 3.75rem) 0;
    color: #fff;
    background: linear-gradient(135deg, var(--itnn-navy-deep) 0%, var(--itnn-navy) 60%, var(--itnn-navy-dark) 100%);
}

.home-intro__eyebrow {
    margin-bottom: 0.5rem;
    color: var(--itnn-gold-light);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.home-intro__title {
    margin-bottom: 0.75rem;
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    font-weight: 700;
    line-height: 1.1;
}

.home-intro__lead {
    max-width: 62ch;
    margin-bottom: 1.5rem;
    color: rgb(255 255 255 / 86%);
    font-size: 1.1rem;
}

.home-intro__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.carrusel-informativo {
    background: var(--itnn-bg-soft);
    border-top: 1px solid var(--itnn-border);
}

.carrusel-informativo__carousel {
    position: relative;
}

.carrusel-informativo__stage {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: clamp(300px, 56vh, 620px);
    padding: 1.25rem 3.5rem 0.5rem;
    background: var(--itnn-bg-soft);
}

.carrusel-informativo__link {
    display: flex;
    max-width: min(1180px, 100%);
    max-height: clamp(300px, 54vh, 600px);
}

.carrusel-informativo__img {
    max-width: 100%;
    max-height: clamp(300px, 54vh, 600px);
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 6px;
    background: #fff;
    box-shadow: 0 10px 30px rgb(13 27 51 / 16%);
}

.carrusel-informativo__control {
    width: 8%;
    opacity: 0.9;
    filter: drop-shadow(0 1px 4px rgb(13 27 51 / 35%));
}

.carrusel-informativo__control .carousel-control-prev-icon,
.carrusel-informativo__control .carousel-control-next-icon {
    background-color: rgb(13 27 51 / 62%);
    border-radius: 50%;
    padding: 1.5rem;
    background-size: 55%;
}

.carrusel-informativo__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    max-width: 1180px;
    margin: 0.5rem auto 0;
    padding: 0.5rem 1rem 1rem;
    font-size: 0.85rem;
    color: var(--itnn-gray);
}

.carrusel-informativo__caption {
    flex: 1 1 auto;
    font-weight: 600;
    color: var(--itnn-navy);
}

.carrusel-informativo__hint {
    flex: 0 0 auto;
    text-align: center;
}

.carrusel-informativo__counter {
    flex: 0 0 auto;
    font-variant-numeric: tabular-nums;
    color: var(--itnn-gray);
}

/* ==========================================================================
   16. Barra flotante (sticky) de redes sociales
   ========================================================================== */
.redes-sticky {
    position: fixed;
    top: 50%;
    right: 0.35rem;
    z-index: 1020;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 0.4rem 0.3rem;
    border: 1px solid rgb(13 27 51 / 10%);
    border-radius: 999px 0 0 999px;
    background: rgb(255 255 255 / 55%);
    box-shadow: 0 4px 16px rgb(13 27 51 / 12%);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.redes-sticky__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.35rem;
    height: 2.35rem;
    border-radius: 50%;
    background: transparent;
    transition: transform 0.15s ease, background-color 0.15s ease;
}

.redes-sticky__link:hover,
.redes-sticky__link:focus-visible {
    transform: scale(1.08);
}

.redes-sticky__link--facebook {
    color: #1877f2;
}

.redes-sticky__link--facebook:hover,
.redes-sticky__link--facebook:focus-visible {
    background: rgb(24 119 242 / 12%);
}

.redes-sticky__link--youtube {
    color: #ff0000;
}

.redes-sticky__link--youtube:hover,
.redes-sticky__link--youtube:focus-visible {
    background: rgb(255 0 0 / 10%);
}

/* ==========================================================================
   17. Videos institucionales (lite YouTube embed)
   ========================================================================== */
.video-card {
    margin-bottom: 1.5rem;
}

.video-card__frame {
    position: relative;
    overflow: hidden;
    border-radius: 0.6rem;
    background: #0d1b33;
    box-shadow: 0 6px 20px rgb(13 27 51 / 18%);
}

.video-card__trigger {
    display: block;
    width: 100%;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.video-card__poster {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    opacity: 0.92;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.video-card__trigger:hover .video-card__poster,
.video-card__trigger:focus-visible .video-card__poster {
    transform: scale(1.015);
    opacity: 1;
}

.video-card__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    color: #fff;
    background: rgb(97 18 50 / 88%);
    box-shadow: 0 6px 20px rgb(0 0 0 / 30%);
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.video-card__trigger:hover .video-card__play,
.video-card__trigger:focus-visible .video-card__play {
    background: var(--itnn-guinda);
    transform: translate(-50%, -50%) scale(1.06);
}

.video-card__iframe {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    border: 0;
}

.video-card__noscript {
    margin: 0;
    padding: 1rem;
    text-align: center;
}

.video-card__noscript a {
    color: #fff;
}

.video-card__caption {
    padding: 0.75rem 0.25rem 0;
}

.video-card__title {
    margin: 0 0 0.25rem;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--itnn-navy);
}

.video-card__text {
    margin: 0;
    color: var(--itnn-gray);
}

@media (max-width: 767.98px) {
    .redes-sticky {
        top: auto;
        right: 0.5rem;
        bottom: 0.5rem;
        transform: none;
        flex-direction: row;
        gap: 0.25rem;
        padding: 0.3rem;
        border-radius: 999px;
    }

    .redes-sticky__link {
        width: 2.25rem;
        height: 2.25rem;
    }

    .carrusel-informativo__stage {
        min-height: 300px;
        padding: 1rem 2.75rem 0.25rem;
    }

    .carrusel-informativo__img {
        max-height: 300px;
    }

    .carrusel-informativo__hint {
        display: none;
    }
}

@media print {
    .redes-sticky,
    .carrusel-informativo__control,
    .video-card__play {
        display: none !important;
    }
}

/* ==========================================================================
   15b. Carrusel mixto de la portada (hero oficial + imágenes informativas)
   ========================================================================== */
.carousel-item--info {
    background: var(--itnn-bg-soft);
}

.carousel-item--info .carrusel-informativo__stage {
    height: 100%;
    min-height: 0;
    padding: 1.25rem 3.5rem;
    background: var(--itnn-bg-soft);
}

.carousel-item--info .carrusel-informativo__img {
    max-height: 100%;
}

/* Presentación (texto original del hero) visible solo en las fotos oficiales. */
.hero--carrusel .hero__content {
    transition: opacity 0.25s ease;
}

.hero--carrusel.hero--info::before {
    opacity: 0;
}

.hero--carrusel.hero--info .hero__content {
    opacity: 0;
    pointer-events: none;
}

.hero--carrusel .carrusel-informativo__bar {
    position: absolute;
    left: 50%;
    bottom: 3.1rem;
    z-index: 5;
    display: flex;
    align-items: center;
    gap: 0.9rem;
    max-width: min(94vw, 960px);
    margin: 0;
    padding: 0.4rem 1.1rem;
    border-radius: 999px;
    background: rgb(13 27 51 / 74%);
    color: #fff;
    box-shadow: 0 4px 16px rgb(0 0 0 / 25%);
    transform: translateX(-50%);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.hero--carrusel .carrusel-informativo__bar .carrusel-informativo__caption {
    flex: 1 1 auto;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 600;
    color: #fff;
}

.hero--carrusel .carrusel-informativo__bar .carrusel-informativo__counter {
    flex: 0 0 auto;
    color: var(--itnn-gold-light);
    font-variant-numeric: tabular-nums;
}

.hero--carrusel .carrusel-informativo__bar .carrusel-informativo__hint {
    flex: 0 0 auto;
    display: none;
    color: rgb(255 255 255 / 82%);
}

.hero--carrusel.hero--info .carrusel-informativo__bar .carrusel-informativo__hint {
    display: inline;
}

@media (max-width: 767.98px) {
    .carousel-item--info .carrusel-informativo__stage {
        padding: 1rem 2.75rem;
    }

    .hero--carrusel .carrusel-informativo__bar {
        bottom: 3rem;
        gap: 0.5rem;
        padding: 0.35rem 0.8rem;
        font-size: 0.78rem;
    }

    .hero--carrusel .carrusel-informativo__bar .carrusel-informativo__hint {
        display: none !important;
    }
}

@media print {
    .hero--carrusel .carrusel-informativo__bar {
        display: none !important;
    }
}

/* Fondo del post difuminado, con menos capas de panel para integrar la imagen. */
.carousel-item--info .carrusel-informativo__stage {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    background: transparent !important;
}

.carousel-item--info .carrusel-informativo__stage::before {
    content: "";
    position: absolute;
    inset: -24px;
    z-index: -2;
    background-image: var(--carrusel-bg);
    background-position: center;
    background-size: cover;
    filter: blur(22px) saturate(1.05);
    transform: scale(1.1);
    opacity: 0.6;
}

/* Sin capa oscura adicional: el panel de la imagen queda más limpio. */
.carousel-item--info .carrusel-informativo__stage::after {
    content: none;
}

.carousel-item--info .carrusel-informativo__link {
    position: relative;
    z-index: 1;
}

.carousel-item--info .carrusel-informativo__img {
    background: transparent;
    border-radius: 0;
    box-shadow: none;
}

/* ==========================================================================
   18. Pie de página: cintilla institucional + sección azul de contacto
   ========================================================================== */
.site-footer {
    padding-top: 0;
    background-color: var(--itnn-navy-deep);
    color: #fff;
}

/* Cintilla con los logos SEP y Gobierno de México */
.footer-strip {
    padding: 0.8rem 0;
    border-top: 4px solid var(--itnn-guinda);
    border-bottom: 1px solid var(--itnn-border);
    background-color: #fff;
}

.footer-strip__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.footer-strip__logo {
    display: inline-block;
    text-decoration: none;
}

.footer-strip__logo img {
    display: block;
    width: auto;
    height: 46px;
}

.footer-strip__logo--gobmx img {
    height: 54px;
}

/* Sección azul: contacto, enlaces, redes y mapa */
.footer-contact {
    padding: 2rem 0 1.75rem;
    background-color: var(--itnn-navy);
}

.footer-contact .footer-heading {
    color: #fff;
}

.footer-contact .footer-address,
.footer-contact .footer-visits {
    color: rgb(255 255 255 / 86%);
}

.footer-contact .footer-visits strong {
    color: var(--itnn-gold-light);
}

.footer-contact .footer-list a,
.footer-contact .footer-social a {
    color: #fff;
}

.footer-contact .footer-list a:hover,
.footer-contact .footer-social a:hover {
    color: #ffcd65;
}

.footer-map {
    display: block;
    margin-top: 1rem;
    text-decoration: none;
}

.footer-map img {
    display: block;
    width: 100%;
    max-width: 240px;
    height: auto;
    border: 2px solid rgb(255 255 255 / 25%);
    border-radius: 0.45rem;
    box-shadow: 0 4px 14px rgb(0 0 0 / 22%);
}

.footer-map span {
    display: block;
    margin-top: 0.4rem;
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
}

.footer-map:hover span,
.footer-map:focus-visible span {
    color: #ffcd65;
}

.footer-bottom {
    margin-top: 0;
    padding: 1.1rem 0;
    border-top: 1px solid rgb(255 255 255 / 14%);
    background-color: var(--itnn-navy-deep);
}

.footer-copyright {
    color: rgb(255 255 255 / 72%);
}

@media (max-width: 767.98px) {
    .footer-strip__inner {
        justify-content: center;
        gap: 0.75rem;
    }

    .footer-strip__logo img {
        height: 34px;
    }

    .footer-strip__logo--gobmx img {
        height: 40px;
    }

    .footer-map img {
        max-width: 100%;
    }
}

/* Galería de imágenes del campus (fotos oficiales de public/images/hero) */
.campus-photo {
    overflow: hidden;
    border-radius: 0.5rem;
    background: #fff;
    box-shadow: 0 4px 16px rgb(13 27 51 / 10%);
}

.campus-photo__img {
    display: block;
    width: 100%;
    height: 210px;
    object-fit: cover;
}

.campus-photo__caption {
    padding: 0.6rem 0.9rem;
    color: var(--itnn-navy);
    font-size: 0.9rem;
    font-weight: 600;
}

@media (max-width: 575.98px) {
    .campus-photo__img {
        height: 180px;
    }
}

/* ==========================================================================
   19. Cabecera fija y botón «volver arriba»
   ========================================================================== */
html {
    scroll-padding-top: calc(var(--itnn-header-height, 160px) + 0.75rem);
}

/* La cabecera completa se mantiene visible al hacer scroll. */
.site-header {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1030;
    background-color: #fff;
}

/* La franja gob.mx y la navegación ya no necesitan ser sticky por separado. */
.site-header .gob-bar__inner,
.site-header .site-nav {
    position: static;
}

/* Botón flotante con la iguana institucional dentro de un círculo azul official. */
.back-to-top {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 1040;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3.5rem;
    height: 3.5rem;
    padding: 0;
    border: 2px solid rgb(255 255 255 / 85%);
    border-radius: 50%;
    background-color: var(--itnn-navy);
    box-shadow: 0 6px 20px rgb(13 27 51 / 32%);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: none;
}

.back-to-top:hover,
.back-to-top:focus-visible {
    background-color: var(--itnn-navy-dark);
    outline: 3px solid rgb(255 255 255 / 70%);
    outline-offset: 2px;
}

.back-to-top img {
    display: block;
    width: 2.1rem;
    height: auto;
    max-height: 2.1rem;
    object-fit: contain;
    pointer-events: none;
}

@media (max-width: 767.98px) {
    .back-to-top {
        right: 0.75rem;
        bottom: 4.5rem;
        width: 3rem;
        height: 3rem;
    }

    .back-to-top img {
        width: 1.75rem;
    }
}

@media print {
    .back-to-top {
        display: none !important;
    }
}

/* ==========================================================================
   20. Ajustes: logo SEP centrado en la cintilla y marca solo con la iguana
   ========================================================================== */
.footer-strip__inner {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

.footer-strip__line {
    flex: 1 1 auto;
    height: 1px;
    background-color: var(--itnn-border);
}

.footer-strip__logo img {
    display: block;
    width: auto;
    height: 54px;
}

.footer-bottom__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem 1.5rem;
    margin-top: 0.85rem;
}

.footer-gobmx img {
    display: block;
    width: auto;
    height: 34px;
}

/* Marca del menú: solo la iguana, sin texto. */
.site-nav__mascot {
    width: 76px;
    height: auto;
}

@media (max-width: 767.98px) {
    .footer-strip__inner {
        gap: 0.75rem;
    }

    .footer-strip__logo img {
        height: 40px;
    }

    .site-nav__mascot {
        width: 62px;
    }
}

/* ==========================================================================
   21. Frescura visual, fluidez y ajustes responsivos (sin cambiar el diseño)
   ========================================================================== */
html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

@supports (scroll-behavior: smooth) {
    @media (prefers-reduced-motion: no-preference) {
        html {
            scroll-behavior: smooth;
        }
    }
}

body {
    -webkit-tap-highlight-color: transparent;
    text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
.display-6,
.section-title,
.hero__title,
.home-intro__title,
.cta-convocatoria__title {
    text-wrap: balance;
}

p,
li {
    text-wrap: pretty;
}

.display-6 {
    font-size: clamp(1.8rem, 3.2vw, 2.75rem);
    line-height: 1.15;
}

a:not(.btn) {
    text-underline-offset: 0.18em;
}

.btn {
    transition: transform 0.16s ease, box-shadow 0.2s ease, background-color 0.18s ease,
        border-color 0.18s ease, color 0.18s ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgb(13 27 51 / 14%);
}

.btn:active {
    transform: translateY(0);
    box-shadow: none;
}

.btn:focus-visible,
.form-control:focus-visible,
.form-select:focus-visible,
.nav-link:focus-visible,
a:focus-visible {
    outline: 3px solid var(--itnn-gold);
    outline-offset: 2px;
}

.card {
    border-radius: 0.8rem;
}

@media (hover: hover) {
    .row .card.h-100,
    .career-card,
    .campus-photo {
        transition: transform 0.2s ease, box-shadow 0.25s ease;
    }

    .row .card.h-100:hover,
    .career-card:hover,
    .campus-photo:hover {
        transform: translateY(-3px);
        box-shadow: 0 14px 30px rgb(13 27 51 / 13%) !important;
    }
}

.site-header {
    transition: box-shadow 0.2s ease;
}

.site-header.is-scrolled {
    box-shadow: 0 8px 24px rgb(13 27 51 / 14%);
}

.site-nav .nav-link {
    position: relative;
    transition: color 0.15s ease;
}

.site-nav .nav-link:not(.dropdown-toggle)::after {
    content: "";
    position: absolute;
    right: 0.65rem;
    bottom: 0.3rem;
    left: 0.65rem;
    height: 2px;
    border-radius: 2px;
    background-color: var(--itnn-gold);
    opacity: 0;
    transform: scaleX(0.4);
    transition: opacity 0.18s ease, transform 0.18s ease;
}

.site-nav .nav-link:not(.dropdown-toggle):hover::after,
.site-nav .nav-link:not(.dropdown-toggle).active::after,
.site-nav .nav-link:not(.dropdown-toggle):focus-visible::after {
    opacity: 1;
    transform: scaleX(1);
}

/* Ajustes finos para pantallas pequeñas */
@media (max-width: 991.98px) {
    .section {
        padding-block: clamp(1.75rem, 4.5vw, 2.75rem);
    }

    .site-nav .nav-link {
        padding-block: 0.65rem;
    }

    .site-nav .nav-link:not(.dropdown-toggle)::after {
        display: none;
    }
}

@media (max-width: 575.98px) {
    .display-6 {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: clamp(1.3rem, 6vw, 1.6rem);
    }

    .home-intro {
        padding-block: 1.75rem;
    }

    .home-intro__actions .btn {
        width: 100%;
    }

    .carrusel-informativo__stage {
        padding-inline: 2rem;
    }

    .footer-contact {
        padding-block: 1.5rem;
    }

    .footer-bottom__meta {
        justify-content: center;
        text-align: center;
    }

    .doc-toolbar .input-group {
        flex-wrap: nowrap;
    }
}

@media (prefers-reduced-motion: reduce) {
    .btn:hover,
    .row .card.h-100:hover,
    .career-card:hover,
    .campus-photo:hover {
        transform: none;
        box-shadow: none !important;
    }
}

/* ==========================================================================
   22. Cabecera compacta al hacer scroll, menú con degradado y ajustes
   ========================================================================== */
/* Menú principal con un degradado sutil (mantiene el azul institucional). */
.site-nav {
    background-color: var(--itnn-navy);
    background-image: linear-gradient(115deg, #0d1b33 0%, var(--itnn-navy) 52%, #12294d 100%);
}

/* La iguana de la marca, un poco más pequeña. */
.site-nav__mascot {
    width: 66px;
    height: auto;
}

/* La cabecera es fija: se reserva su altura expandida para que el contenido no
   salte al compactarse (sin efecto «persiana»). */
body {
    padding-top: var(--itnn-header-expanded, 231px);
}

@media (max-width: 767.98px) {
    body {
        padding-top: var(--itnn-header-expanded, 245px);
    }
}

/* Cabecera compacta: al bajar se ocultan la barra gob.mx y la franja institucional. */
.site-header .gob-bar,
.site-header .ids-band {
    overflow: hidden;
    max-height: var(--gob-bar-h, 60px);
    transition: max-height 0.38s cubic-bezier(0.22, 0.61, 0.36, 1), opacity 0.22s ease,
        padding 0.38s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.site-header .ids-band {
    max-height: var(--ids-band-h, 170px);
}

.site-header.is-compact .gob-bar,
.site-header.is-compact .ids-band {
    max-height: 0;
    padding-block: 0;
    border-bottom-width: 0;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: max-height 0.38s cubic-bezier(0.22, 0.61, 0.36, 1), opacity 0.22s ease,
        padding 0.38s cubic-bezier(0.22, 0.61, 0.36, 1), visibility 0s linear 0.38s;
}

@media (prefers-reduced-motion: reduce) {
    .site-header .gob-bar,
    .site-header .ids-band {
        transition: none;
    }
}

@media print {
    .site-header {
        position: static !important;
    }

    body {
        padding-top: 0 !important;
    }
}

/* La sección de convocatorias y avisos usa una foto oficial con degradado sutil. */
.section--cta {
    background-color: var(--itnn-guinda);
    background-image: linear-gradient(120deg, rgb(97 18 50 / 88%) 0%, rgb(27 57 106 / 84%) 100%),
        url('../images/hero/hero-2-entrada-campus.webp');
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

@media (max-width: 767.98px) {
    .site-nav__mascot {
        width: 56px;
    }
}

/* ==========================================================================
   23. Listas desplegables del menú: degradado de sólido a casi transparente
   ========================================================================== */
.site-nav .dropdown-menu {
    background-color: transparent;
    background-image: linear-gradient(
        180deg,
        rgb(13 27 51 / 98%) 0%,
        rgb(13 27 51 / 92%) 35%,
        rgb(13 27 51 / 62%) 75%,
        rgb(13 27 51 / 30%) 100%
    );
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-top: 3px solid var(--itnn-gold);
    box-shadow: 0 14px 34px rgb(13 27 51 / 28%);
    overflow: hidden;
}

.site-nav .dropdown-item {
    text-shadow: 0 1px 2px rgb(13 27 51 / 35%);
}

/* Sin soporte de blur, se conserva un degradado con más opacidad para legibilidad. */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .site-nav .dropdown-menu {
        background-image: linear-gradient(180deg, rgb(13 27 51 / 98%) 0%, rgb(13 27 51 / 78%) 100%);
    }
}

/* En móvil el menú se despliega dentro de la barra azul: degradado más discreto. */
@media (max-width: 991.98px) {
    .site-nav .dropdown-menu {
        background-image: linear-gradient(180deg, rgb(13 27 51 / 90%) 0%, rgb(13 27 51 / 30%) 100%);
        -webkit-backdrop-filter: blur(6px);
        backdrop-filter: blur(6px);
        box-shadow: none;
    }
}

/* ==========================================================================
   24. Opción de menú marcada y franja institucional equilibrada
   ========================================================================== */
/* El botón del menú queda marcado cuando se navega a cualquiera de sus opciones. */
.site-nav .nav-link.dropdown-toggle {
    position: relative;
}

.site-nav .nav-link.dropdown-toggle.active::after {
    content: "";
    position: absolute;
    right: 0.65rem;
    bottom: 0.3rem;
    left: 0.65rem;
    height: 2px;
    border-radius: 2px;
    background-color: var(--itnn-gold);
}

/* La opción seleccionada dentro del desplegable queda resaltada con barra dorada. */
.site-nav .dropdown-item.active,
.site-nav .dropdown-item[aria-current="page"] {
    background-color: rgb(255 255 255 / 14%);
    box-shadow: inset 3px 0 0 var(--itnn-gold);
    font-weight: 700;
}

/* Franja SEP · TecNM · ITNN: logos algo más pequeños, centrados y con aire. */
.ids-band {
    padding: 0.6rem 0;
}

.ids-band__inner {
    align-items: center;
    max-width: 720px;
    gap: 2rem;
}

.ids-band__item {
    display: flex;
    align-items: center;
}

.ids-band__item--sep {
    width: 230px;
}

.ids-band__item--tecnm {
    width: 136px;
}

.ids-band__item--itnn {
    width: 110px;
}

.goldenborder {
    padding-left: 1.75rem;
}

@media (max-width: 991.98px) {
    .ids-band__inner {
        flex-wrap: wrap;
        gap: 0.6rem 1.25rem;
        max-width: 100%;
    }

    .ids-band__item--sep {
        width: min(48vw, 210px);
    }

    .ids-band__item--tecnm {
        width: min(30vw, 118px);
    }

    .ids-band__item--itnn {
        width: 92px;
    }

    .goldenborder {
        padding-left: 1rem;
    }
}

@media (max-width: 575.98px) {
    .ids-band__inner {
        gap: 0.25rem;
    }

    .ids-band__item--sep {
        width: min(38vw, 150px);
    }

    .ids-band__item--tecnm {
        width: min(24vw, 92px);
    }

    .ids-band__item--itnn {
        width: 72px;
    }

    .goldenborder {
        padding-left: 0.75rem;
    }
}

/* ==========================================================================
   25. Franja legal del pie estilo gob.mx, con imagen institucional
   ========================================================================== */
.footer-bottom {
    margin-top: 0;
    padding: 2.2rem 0 1.4rem;
    border-top: 0;
    background-color: var(--itnn-guinda);
    background-image: linear-gradient(
            105deg,
            rgb(97 18 50 / 96%) 0%,
            rgb(97 18 50 / 95%) 45%,
            rgb(97 18 50 / 92%) 72%,
            rgb(27 57 106 / 90%) 100%
        ),
        url('../images/hero/hero-1-edificio-principal.webp');
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    color: #fff;
}

.footer-bottom .footer-heading {
    color: #fff;
}

.footer-bottom .footer-small {
    color: rgb(255 255 255 / 82%);
}

.footer-bottom .footer-list a,
.footer-bottom .footer-social a {
    color: #fff;
}

.footer-bottom .footer-list a:hover,
.footer-bottom .footer-social a:hover {
    color: #ffcd65;
}

.footer-bottom .footer-gobmx {
    display: inline-block;
    margin-top: 0;
}

.footer-bottom .footer-gobmx img {
    width: auto;
    height: 56px;
}

.footer-bottom .footer-social {
    margin-bottom: 0;
    gap: 1.1rem;
}

.footer-bottom .footer-social a {
    padding: 0;
    border: 0;
    background: transparent;
}

.footer-bottom .footer-copyright {
    margin-top: 1.6rem;
    padding-top: 1rem;
    border-top: 1px solid rgb(255 255 255 / 18%);
    color: rgb(255 255 255 / 78%);
    font-size: 0.82rem;
    text-align: center;
}

@media (max-width: 991.98px) {
    .footer-bottom {
        padding: 1.6rem 0 1.2rem;
    }
}