/* ============================================================
   Sistema institucional UNAM · DGB
   Hoja de estilos compartida para las pantallas de acceso
   Bootstrap 5.3 + CSS puro
   ============================================================ */

:root {
  /* Paleta institucional oficial UNAM */
  --unam-azul: #002262;      /* Azul institucional oficial */
  --unam-azul-900: #001d54;  /* Variante oscura */
  --unam-azul-700: #113c94;  /* Variante media */
  --unam-oro: #D59F0F;       /* Dorado institucional oficial */
  --unam-oro-claro: #ecc659; /* Oro claro para acentos */
  --unam-gris: #f4f6f8;      /* Fondo neutro */
  --unam-gris-borde: #d7dde3;/* Bordes suaves */
  --unam-texto: #1f2933;     /* Texto principal */
  --unam-texto-suave: #1f2933;  /* Texto secundario (mejorado para legibilidad) */

  --radio: 14px;
  --sombra: 0 18px 45px rgba(0, 43, 122, 0.15);
  --transicion: 180ms ease;

}

* {
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, system-ui, sans-serif;
  color: var(--unam-texto);
  background-color: var(--unam-gris);
  min-height: 100vh;
  margin: 0;
  padding-bottom: 140px;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Marca / emblema institucional ---------- */
.marca-unam {  
  text-decoration: none;
  color: inherit;
}

.emblema {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--unam-oro);
  color: var(--unam-azul-900);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.5px;
  flex-shrink: 0;
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.35);
}

.emblema-img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  flex-shrink: 0;
  filter: brightness(0) invert(1);
}
.emblema-completo-img {
  width: 100%;  
  object-fit: contain;
  flex-shrink: 0;
  filter: brightness(0) invert(1);
}

.emblema-img-oscuro {
  width: 56px;
  height: 56px;
  object-fit: contain;
  flex-shrink: 0;
  filter: none;
}

/* Tamaño alternativo para propuesta 3 */
.tarjeta-vidrio .emblema-img {
  width: 72px;
  height: 72px;
  margin: 0 auto 1rem;
}

.marca-unam .titulo {
  font-weight: 700;
  line-height: 1.1;
  font-size: 1.25rem;  
}

.marca-unam .subtitulo {
  font-size: 1.25rem;  
  opacity: 0.8;    
}

.pleca-institucional{
  width:  60px;
  height: 4px;
  background-color: var(--unam-oro);
  border-radius: 2px;
  margin: 0.75rem 0 1.25rem 0;
}

/* ---------- Tarjeta de acceso ---------- */
.tarjeta-acceso {
  background: #ffffff;
  border: 1px solid var(--unam-gris-borde);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
}

/* ---------- Formulario ---------- */
.form-label {
  font-weight: 600;
  color: var(--unam-texto);
  font-size: 0.92rem;
}

.form-control,
.input-group-text {
  border-color: var(--unam-gris-borde);
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
}

.form-control:focus {
  border-color: var(--unam-azul-700);
  box-shadow: 0 0 0 0.2rem rgba(17, 60, 148, 0.25);
}

.input-group-text {
  background: var(--unam-gris);
  color: var(--unam-azul);
}

/* Botón institucional */
.btn-unam {
  --bs-btn-color: #fff;
  --bs-btn-bg: var(--unam-azul);
  --bs-btn-border-color: var(--unam-azul);
  --bs-btn-hover-color: #fff;
  --bs-btn-hover-bg: var(--unam-azul-900);
  --bs-btn-hover-border-color: var(--unam-azul-900);
  --bs-btn-active-bg: var(--unam-azul-900);
  --bs-btn-active-border-color: var(--unam-azul-900);
  --bs-btn-focus-shadow-rgb: 17, 60, 148;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
}

.btn-oro {
  --bs-btn-color: var(--unam-azul-900);
  --bs-btn-bg: var(--unam-oro);
  --bs-btn-border-color: var(--unam-oro);
  --bs-btn-hover-color: var(--unam-azul-900);
  --bs-btn-hover-bg: var(--unam-oro-claro);
  --bs-btn-hover-border-color: var(--unam-oro-claro);
  --bs-btn-focus-shadow-rgb: 213, 159, 15;
  font-weight: 700;
}

.enlace-unam {
  color: var(--unam-azul-700);
  text-decoration: none;
  font-weight: 600;
}
.enlace-unam:hover {
  text-decoration: underline;
  color: var(--unam-azul-900);
}

/* Botón para mostrar/ocultar contraseña */
.btn-toggle-pass {
  border: 1px solid var(--unam-gris-borde);
  border-left: 0;
  background: #fff;
  color: var(--unam-azul);
}
.btn-toggle-pass:hover {
  background: var(--unam-gris);
}

/* Pie institucional */
.pie-institucional {
  font-size: 0.82rem;
  color: #f7f7f7;
}

/* Ocultar pie institucional dentro del formulario */
form#formulario > p.text-center.pie-institucional {
  visibility: hidden;
}

/* Mejorar contraste de texto muted y descriptions */
.text-muted {
  color: #1f2933 !important;
}

.form-text {
  color: #1f2933;
}

.opacity-75 {
  color: #1f2933 !important;
  opacity: 1 !important;
}

/* Accesibilidad: foco visible */
a:focus-visible,
button:focus-visible,
.form-control:focus-visible {
  outline: 3px solid var(--unam-oro);
  outline-offset: 2px;
}

/* Enlace para saltar al contenido */
.saltar-contenido {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--unam-azul);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 0 0 8px 0;
  z-index: 1080;
}
.saltar-contenido:focus {
  left: 0;
}

/* Barra superior institucional (franja de color) */
.franja-superior {
  height: 6px;
  background: linear-gradient(90deg, var(--unam-oro) 0%, var(--unam-oro-claro) 55%, var(--unam-azul) 100%);
}

/* Mensaje de alerta accesible */
.alerta-acceso {
  display: none;
}
.alerta-acceso.mostrar {
  display: flex;
}

/* ---------- Footer institucional (FIXED) ---------- */
.footer-institucional {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #f8f9fa;
  border-top: 1px solid var(--unam-gris-borde);
  padding: 1rem 0;
  z-index: 1000;
  max-height: 140px;
  overflow: hidden;
  visibility: hidden;
}
.footer-institucional-oscuro {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #070d18;
  color:white;
  padding: 1rem 0;
  z-index: 1000;
  max-height: 140px;
  overflow: hidden;
}
.footer-institucional-transparente {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: transparent;
  border-top: 1px solid var(--unam-gris-borde);
  color:white;
  padding: 1rem 0;
  z-index: 1000;
  max-height: 140px;
  overflow: hidden;
}

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

.footer-enlaces a {
  color: var(--unam-azul-700);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.footer-enlaces a:hover {
  text-decoration: underline;
  color: var(--unam-azul-900);
}

.footer-enlaces a:focus-visible {
  outline: 3px solid var(--unam-oro);
  outline-offset: 2px;
  border-radius: 4px;
}




.footer-institucional-oscuro .footer-enlaces a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.footer-institucional-oscuro .footer-enlaces a:hover {
  text-decoration: underline;
  color: var(--unam-oro-claro);
}

.footer-institucional-oscuro .footer-enlaces a:focus-visible {
  outline: 3px solid var(--unam-oro);
  outline-offset: 2px;
  border-radius: 4px;
}
.footer-institucional-transparente .footer-enlaces a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.footer-institucional-transparente .footer-enlaces a:hover {
  text-decoration: underline;
  color: white;
}

.footer-institucional-transparente .footer-enlaces a:focus-visible {
  outline: 3px solid white;
  outline-offset: 2px;
  border-radius: 4px;
}

/* Modal personalizado */
.modal-header {
  border-bottom: 8px solid var(--unam-oro);
  background: var(--unam-azul);
  color: white;
}

.modal-title {
  font-weight: 700;
  color: white;
}

.btn-close {
    --bs-btn-close-bg: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath d='M.293.293a1 1 0 0 1 1.414 0L8 6.586 14.293.293a1 1 0 1 1 1.414 1.414L9.414 8l6.293 6.293a1 1 0 1 1-1.414 1.414L8 9.414l-6.293 6.293-1.414-1.414L6.586 8 .293 1.707a1 1 0 0 1 0-1.414z'/%3e%3c/svg%3e");
}

.modal-header .btn-close:focus-visible {
  outline: 3px solid var(--unam-oro);
  outline-offset: 2px;
}

.modal-body {
  color: var(--unam-texto);
  line-height: 1.6;
}

.modal-body a {
  color: var(--unam-azul-700);
  text-decoration: none;
  font-weight: 500;
}

.modal-body a:hover {
  text-decoration: underline;
  color: var(--unam-azul-900);
}

.modal-footer {
  border-top: 1px solid var(--unam-gris-borde);
  background: var(--unam-azul);
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}




/* Modal */
/* ============================================================
   Créditos del sistema
   ============================================================ */

.creditos-contenido {
    padding: 10px 30px 20px;
    text-align: center;
}

/* Cada bloque institucional */
.creditos-seccion {
    margin-bottom: 28px;
}

/* Separación entre dependencias */
.creditos-seccion + .creditos-seccion {
    padding-top: 25px;
    border-top: 2px solid var(--unam-oro);
}

/* Nombre de institución / dependencia */
.h5_creditos {
    margin: 0 0 22px;
    color: var(--unam-texto);
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.35;
}

/* Crédito individual */
.credito {
    margin-bottom: 18px;
}

/* Cargo */
.credito h6 {
    position: relative;
    display: inline-block;

    margin: 0 0 5px;
    padding-left: 15px;

    color: var(--unam-texto);
    font-size: 0.95rem;
    font-weight: 700;
    line-height: 1.3;
}

/* Acento dorado */
.credito h6::before {
    content: "";

    position: absolute;
    left: 0;
    top: 50%;

    width: 8px;
    height: 8px;

    transform: translateY(-50%);

    background-color: var(--unam-oro);
}

/* Nombre de la persona */
.credito p {
    margin: 0;

    color: var(--unam-texto);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Equipo de desarrollo */
.credito-equipo ul {
    margin: 8px 0 0;
    padding: 0;

    list-style: none;
}

.credito-equipo li {
    margin-bottom: 4px;

    color: var(--unam-texto);
    font-size: 0.9rem;
    line-height: 1.45;
}
.modal-content {        
      background-image: url("../images/fondo_completo_3.png");
      background-size: cover;
      background-position: center center;
      background-repeat: no-repeat;
}


/* ============================================================
   Efecto máquina de escribir del título
   ============================================================ */

h1.text-balance {
    overflow: hidden;
}

/* Cada línea funciona como una máquina de escribir independiente */
h1.text-balance span {
    display: block;
    width: fit-content;
    max-width: 0;
    overflow: hidden;
    white-space: nowrap;
    border-right: 0.15em solid transparent;
}

h1.text-balance {
    max-width: 100%;
    text-wrap: balance;
}

h1.text-balance {
    position: relative;
    display: inline-block;
}

h1.text-balance::after {
    content: "";
    display: inline-block;
    width: 4px;
    height: 1em;
    margin-left: 4px;
    vertical-align: -0.1em;
    background-color: var(--unam-oro);
    animation: blink-caret 0.7s step-end infinite;
}

@keyframes blink-caret {
    50% {
        opacity: 0;
    }
}

body{
    overflow-y: hidden;
}    
.lienzo-dividido {
  min-height: 100vh;
  background-image: url("../images/fondo_completo_4.3.png");
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
}
@media (max-width: 985px) {
  body{
    overflow-y:auto;
  }  
  .lienzo-dividido {
    background-image: url("../images/fondo_completo_3.png");
    background-position: 100% center;
  }    
}
@media (min-width: 1440px) {
  .emblema-completo-img {
    width: 550px; 
  }
}
.panel-institucional {      
  color: #fff;
}    
.panel-formulario {      
  color: #fff;
}

.panel-institucional .lista-beneficios li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.panel-institucional .bi {
  color: var(--unam-oro-claro);
  font-size: 1.25rem;
  line-height: 1.4;
}

.panel-institucional .emblema {
  width: 64px;
  height: 64px;
  font-size: 1.2rem;
}

.tarjeta-centrada {
  max-width: 460px;
  width: 100%;
}

.tarjeta-centrada .encabezado-tarjeta {      
  background-image: url("../images/Trama_UNAM_7.jpg");      
  background-position: left;
  background-repeat: no-repeat;

  color: #fff;
  font-weight: 600;
  border-color: #44608d;
  border-bottom: 7px solid #d59f0f;

  color: #fff;
  border-radius: var(--radio) var(--radio) 0 0;
  padding: 2rem 2rem 1.75rem;
  text-align: center;
}

.tarjeta-centrada .emblema {
  width: 68px;
  height: 68px;
  margin: 0 auto 1rem;
  font-size: 1.25rem;
}

.btn:hover {
  background-color: var(--color-secondary) !important;
  border-color: #dbb448 !important;
  background-image: linear-gradient(to bottom, #dfb135 50%, #e38939 100%) !important;
  color: #000 !important;      
}
.btn-secondary {
    background-image: linear-gradient(to bottom, #c6dff8 50%, #c6dff8 100%);
    color: #000 !important;
    border-color: #002b7a !important;
}
.form-check-label{
  color: #000;
}

.panel-institucional {
  color: #fff;
  padding: 3rem !important;
  padding-left: 10rem !important;
}
.panel-formulario {      
  color: #fff;
}

input[type=text], input[type=email], input[type=date], input[type=password], input[type=search]{
  background-color: #e8f0fe;
  border-bottom: 1px solid #002b7a;
}

.btn.btn-toggle-pass{
  border-bottom: 1px solid #002b7a;
}
.form-control {
  display: block;
  width: 100%;
  padding: .375rem .75rem;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--bs-body-color);
  appearance: none;
  background-color: var(--bs-body-bg);
  background-clip: padding-box;
  border: var(--bs-border-width) solid var(--bs-border-color);
  border-radius: var(--bs-border-radius);
  transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out;
}
.input-group-text {
  display: flex;
  align-items: center;
  padding: .375rem .75rem;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: #fff;
  text-align: center;
  white-space: nowrap;
  background-color: #002b7a;
  border: var(--bs-border-width) solid var(--bs-border-color);
  border-radius: var(--bs-border-radius);
}
.form-check-input{
  border:1px solid var(--unam-azul);
}