/*
 * Beca Idioma · DGOAE UNAM
 * Hoja de estilos propia sobre Bootstrap 5.3. Conserva la identidad de la
 * plantilla original "Clean Blog": encabezado con fotografía y velo oscuro,
 * barra transparente, tipografías Lora / Open Sans y acento turquesa #0085A1.
 */

:root {
    --beca-acento: #0085A1;
    --beca-acento-oscuro: #00657b;
    --beca-texto: #212529;
    --beca-gris: #868e96;
    --beca-borde: #e9ecef;
    --beca-titulos: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --beca-cuerpo: 'Lora', 'Times New Roman', serif;

    --bs-primary: var(--beca-acento);
    --bs-primary-rgb: 0, 133, 161;
    --bs-link-color: var(--beca-texto);
    --bs-link-color-rgb: 33, 37, 41;
    --bs-link-hover-color: var(--beca-acento);
    --bs-link-hover-color-rgb: 0, 133, 161;
}

body {
    font-size: 16px;
    color: var(--beca-texto);
    font-family: var(--beca-cuerpo);
    background: #fff;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    font-family: var(--beca-titulos);
}

a { transition: color .2s; }

::selection {
    color: #fff;
    background: var(--beca-acento);
}

/* ---------- Barra de navegación ---------- */

#mainNav {
    position: absolute;
    border-bottom: 1px solid var(--beca-borde);
    background-color: #fff;
    font-family: var(--beca-titulos);
}

#mainNav .navbar-brand {
    font-weight: 800;
    color: #343a40;
}

#mainNav .navbar-toggler {
    font-size: 12px;
    font-weight: 800;
    padding: 13px;
    text-transform: uppercase;
    color: #343a40;
    border: 0;
}

#mainNav .navbar-nav > li.nav-item > a {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
}

@media (min-width: 992px) {
    #mainNav {
        border-bottom: 1px solid transparent;
        background: transparent;
        transition: background-color .2s;
        transform: translate3d(0, 0, 0);
        backface-visibility: hidden;
    }
    #mainNav .navbar-brand,
    #mainNav .navbar-nav > li.nav-item > a {
        padding: 10px 20px;
        color: #fff;
    }
    #mainNav .navbar-brand:hover,
    #mainNav .navbar-brand:focus,
    #mainNav .navbar-nav > li.nav-item > a:hover,
    #mainNav .navbar-nav > li.nav-item > a:focus {
        color: rgba(255, 255, 255, .8);
    }
    /* Al bajar se oculta; al subir reaparece con fondo blanco (js/beca.js). */
    #mainNav.is-fixed {
        position: fixed;
        top: -67px;
        transition: transform .2s;
        border-bottom: 1px solid #fff;
        background-color: rgba(255, 255, 255, .9);
    }
    #mainNav.is-fixed .navbar-brand,
    #mainNav.is-fixed .navbar-nav > li.nav-item > a {
        color: var(--beca-texto);
    }
    #mainNav.is-fixed .navbar-brand:hover,
    #mainNav.is-fixed .navbar-nav > li.nav-item > a:hover {
        color: var(--beca-acento);
    }
    #mainNav.is-visible {
        transform: translate3d(0, 100%, 0);
    }
}

/* ---------- Encabezado con fotografía ---------- */

header.masthead {
    margin-bottom: 50px;
    background: no-repeat center center;
    background-color: var(--beca-gris);
    background-size: cover;
    position: relative;
}

header.masthead.masthead-home    { background-image: url('../img/home-bg.jpg'); }
header.masthead.masthead-about   { background-image: url('../img/about-bg.jpg'); }
header.masthead.masthead-post    { background-image: url('../img/post-bg.jpg'); }
header.masthead.masthead-contact { background-image: url('../img/contact-bg.jpg'); }

header.masthead .overlay {
    position: absolute;
    inset: 0;
    background-color: var(--beca-texto);
    opacity: .5;
}

header.masthead .page-heading {
    padding: 150px 0 100px;
    color: #fff;
    text-align: center;
}

header.masthead .page-heading h1 {
    font-size: 44px;
    margin: 0;
}

header.masthead .page-heading .subheading {
    font-size: 20px;
    font-weight: 300;
    line-height: 1.2;
    display: block;
    margin: 10px 0 0;
    font-family: var(--beca-titulos);
}

@media (min-width: 768px) {
    header.masthead .page-heading { padding: 180px 0 130px; }
    header.masthead .page-heading h1 { font-size: 72px; }
    header.masthead .page-heading .subheading { font-size: 24px; }
}

/* ---------- Botones (mayúsculas y espaciado de la plantilla) ---------- */

.btn {
    font-size: 14px;
    font-weight: 800;
    padding: 12px 24px;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 0;
    font-family: var(--beca-titulos);
}

.btn-primary {
    --bs-btn-bg: var(--beca-acento);
    --bs-btn-border-color: var(--beca-acento);
    --bs-btn-hover-bg: var(--beca-acento-oscuro);
    --bs-btn-hover-border-color: var(--beca-acento-oscuro);
    --bs-btn-active-bg: var(--beca-acento-oscuro);
    --bs-btn-active-border-color: var(--beca-acento-oscuro);
    --bs-btn-disabled-bg: var(--beca-acento);
    --bs-btn-disabled-border-color: var(--beca-acento);
}

/* ---------- Formularios ---------- */

.form-label,
.form-control,
.form-select,
.form-check-label,
legend,
.input-group-text {
    font-family: var(--beca-titulos);
}

.form-label {
    font-weight: 600;
    font-size: .9rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--beca-acento);
    box-shadow: 0 0 0 .2rem rgba(0, 133, 161, .2);
}

.mayusculas { text-transform: uppercase; }
.mayusculas::placeholder { text-transform: none; }

.seccion {
    border: 1px solid var(--beca-borde);
    border-top: 3px solid var(--beca-acento);
    padding: 1.25rem 1.25rem .5rem;
    margin-bottom: 1.5rem;
    background: #fff;
}

.seccion legend {
    float: none;
    width: auto;
    font-size: 1.15rem;
    font-weight: 700;
    padding: 0 .5rem;
    margin-bottom: .75rem;
    color: var(--beca-acento);
}

.titulo-seccion {
    font-size: 1.6rem;
    margin-bottom: 1rem;
}

.dato-fijo {
    font-family: var(--beca-titulos);
    font-weight: 700;
    padding-top: .375rem;
}

/* ---------- Inicio de sesión ---------- */

.caja-login {
    max-width: 440px;
    margin: 0 auto 2rem;
    padding: 2rem;
    border: 1px solid var(--beca-borde);
    border-top: 3px solid var(--beca-acento);
}

.caja-login h3 { color: var(--beca-acento); }

/* ---------- Créditos ---------- */

.creditos h5 { margin: 1.75rem 0 .25rem; }
.creditos span { color: #6c757d; }

/* ---------- Pie ---------- */

.pie {
    padding: 40px 0 50px;
    border-top: 1px solid var(--beca-borde);
    margin-top: 2rem;
}

.pie .copyright {
    font-size: 14px;
    text-align: center;
    font-family: var(--beca-titulos);
}