/* =====================================================
   LA VELOZ · Hoja de estilos base del frontend
   Dirección visual: señalética de transporte interurbano.
   - Verde librea y grafito del autobús como colores de marca.
   - Azul del logotipo para enlaces.
   - Ámbar reservado sólo para avisos.
   - Barlow / Barlow Semi Condensed (familia inspirada en
     señalización vial) como única familia tipográfica.
===================================================== */

:root {
    /* --- Marca --- */
    --lv-green: #00802B;        /* botones y acciones (AA con texto blanco) */
    --lv-green-ink: #0B5A22;    /* hover / texto verde sobre claro */
    --lv-lime: #6CC24A;         /* franja de librea, nunca para texto */
    --lv-blue: #303990;         /* azul del logotipo: enlaces */
    --lv-blue-ink: #232B73;
    --lv-graphite: #2E3432;     /* faldón gris del autobús */
    --lv-amber: #F2B705;        /* sólo avisos */

    /* --- Neutros --- */
    --lv-ink: #1C2420;          /* texto principal */
    --lv-ink-2: #4A5550;        /* texto secundario (7:1 sobre blanco) */
    --lv-platform: #F2F4F0;     /* superficie "andén" */
    --lv-rule: #D9DED7;         /* filetes y bordes */
    --lv-white: #FFFFFF;

    /* --- Tipografía --- */
    --lv-font: "Barlow", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
    --lv-font-display: "Barlow Semi Condensed", "Barlow", system-ui, sans-serif;

    /* Escala modular 1.25 sobre 17px */
    --lv-fs-xs: .8125rem;   /* 13 */
    --lv-fs-sm: .9375rem;   /* 15 */
    --lv-fs-base: 1.0625rem;/* 17 */
    --lv-fs-md: 1.3125rem;  /* 21 */
    --lv-fs-lg: 1.625rem;   /* 26 */
    --lv-fs-xl: 2.0625rem;  /* 33 */
    --lv-fs-2xl: clamp(2.25rem, 4.2vw, 3.25rem);
    --lv-fs-hero: clamp(2.75rem, 5.2vw, 4.5rem);

    /* --- Espaciado (base 8) --- */
    --lv-s1: .5rem;
    --lv-s2: 1rem;
    --lv-s3: 1.5rem;
    --lv-s4: 2rem;
    --lv-s5: 3rem;
    --lv-s6: 4.5rem;
    --lv-s7: 6rem;

    /* --- Marco de página ---
       Un único marco para cabecera, secciones a sangre y pie.
       El margen lateral crece con la pantalla y el ancho útil se
       limita a --lv-frame, así el logo no queda aislado en monitores
       grandes ni pegado al borde en portátiles. */
    --lv-gutter: clamp(1.25rem, 4vw, 5rem);
    --lv-frame: 1920px;

    /* Altura de la cabecera fija en escritorio (barra + filete inferior) */
    --lv-header-h: 77px;

    /* --- Forma --- */
    --lv-radius-sm: 3px;
    --lv-radius: 6px;
    --lv-focus: 0 0 0 3px var(--lv-white), 0 0 0 6px var(--lv-blue);

    /* --- Alias heredados (usados por noticias, avisos, atención al cliente) --- */
    --blue: var(--lv-blue);
    --blue-dark: var(--lv-blue-ink);
    --green: var(--lv-green);
    --green-dark: var(--lv-green-ink);
    --cream: #F1E5B6;
    --dark: var(--lv-ink);
    --text: var(--lv-ink);
    --muted: var(--lv-ink-2);
    --light: var(--lv-platform);
    --border: var(--lv-rule);
    --white: var(--lv-white);
    --shadow-sm: 0 1px 2px rgba(28, 36, 32, .06);
    --shadow-md: 0 8px 24px rgba(28, 36, 32, .12);
    --radius: var(--lv-radius);
}


/* =====================================================
   BASE
===================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    /* La cabecera es fija: los anclajes no deben quedar debajo */
    scroll-padding-top: 88px;
}

body {
    margin: 0;
    color: var(--lv-ink);
    background: var(--lv-white);
    font-family: var(--lv-font);
    font-size: var(--lv-fs-base);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
    font-family: var(--lv-font-display);
    color: var(--lv-ink);
    font-weight: 600;
    letter-spacing: -.01em;
    text-wrap: balance;
}

p {
    text-wrap: pretty;
}

img {
    max-width: 100%;
}

a {
    color: var(--lv-blue);
    text-underline-offset: .18em;
    transition: color .15s ease, background-color .15s ease, border-color .15s ease;
}

a:hover {
    color: var(--lv-blue-ink);
}

.container {
    max-width: 1200px;
}

/* Marco de página (cabecera, franjas a sangre, pie) */
.lv-shell {
    width: 100%;
    max-width: calc(var(--lv-frame) + 2 * var(--lv-gutter));
    margin-inline: auto;
    padding-inline: var(--lv-gutter);
}

/* Foco visible y consistente en todo el sitio */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: none;
    box-shadow: var(--lv-focus);
    border-radius: var(--lv-radius-sm);
}

.visually-hidden-focusable:focus {
    position: fixed !important;
    top: var(--lv-s2);
    left: var(--lv-s2);
    z-index: 1100;
    padding: var(--lv-s1) var(--lv-s2);
    background: var(--lv-white);
    color: var(--lv-blue);
    font-weight: 600;
}


/* =====================================================
   BOTONES (componentes reutilizables)
===================================================== */

.lv-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    min-height: 48px;
    padding: .75rem 1.375rem;
    border: 2px solid transparent;
    border-radius: var(--lv-radius-sm);
    font-family: var(--lv-font);
    font-size: var(--lv-fs-base);
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
}

.lv-btn--primary {
    background: var(--lv-green);
    color: var(--lv-white);
}

.lv-btn--primary:hover {
    background: var(--lv-green-ink);
    color: var(--lv-white);
}

.lv-btn--ghost {
    background: transparent;
    color: var(--lv-ink);
    border-color: var(--lv-rule);
}

.lv-btn--ghost:hover {
    border-color: var(--lv-ink);
    color: var(--lv-ink);
}

.lv-btn[disabled],
.lv-btn[aria-disabled="true"] {
    opacity: .45;
    pointer-events: none;
}

/* Enlace de texto con flecha (acción secundaria) */
.lv-link {
    display: inline-flex;
    align-items: center;
    gap: .375rem;
    color: var(--lv-blue);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 2px solid transparent;
}

.lv-link:hover {
    color: var(--lv-blue-ink);
    border-bottom-color: currentColor;
}


/* =====================================================
   CABECERA Y NAVEGACIÓN
===================================================== */

.main-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: var(--lv-white);
    border-bottom: 1px solid var(--lv-rule);
}

.main-header .navbar {
    min-height: calc(var(--lv-header-h) - 1px);
    padding: 0;
}

.brand {
    display: flex;
    align-items: center;
    padding: .5rem 0;
    text-decoration: none;
}

.brand img {
    display: block;
    width: auto;
    max-width: 168px;
    max-height: 44px;
    object-fit: contain;
}

.main-header .navbar-nav {
    gap: .25rem;
    align-self: stretch;
}

.main-header .nav-item {
    display: flex;
}

.main-header .nav-link {
    position: relative;
    display: flex;
    align-items: center;
    padding: 0 .75rem !important;
    color: var(--lv-ink) !important;
    font-size: var(--lv-fs-sm);
    font-weight: 500;
    white-space: nowrap;
}

/* La línea activa se apoya en el borde inferior de la cabecera,
   como el trazo de una línea en un plano de red. */
.main-header .nav-link:hover {
    color: var(--lv-green-ink) !important;
    box-shadow: inset 0 -4px 0 var(--lv-rule);
}

.main-header .nav-link.active,
.main-header .nav-link[aria-current="page"] {
    color: var(--lv-ink) !important;
    font-weight: 600;
    box-shadow: inset 0 -4px 0 var(--lv-green);
}

.main-header .nav-link:focus-visible {
    box-shadow: inset 0 0 0 3px var(--lv-blue);
    border-radius: 0;
}

@media (min-width: 992px) {
    .main-header .navbar {
        align-items: stretch;
    }

    .main-header .navbar-collapse {
        align-self: stretch;
    }

    .main-header .navbar-nav {
        height: 100%;
    }
}

.main-header .dropdown-menu {
    min-width: 280px;
    margin-top: 0 !important;
    padding: .5rem 0;
    border: 1px solid var(--lv-rule);
    border-radius: 0 0 var(--lv-radius) var(--lv-radius);
    box-shadow: var(--shadow-md);
    font-size: var(--lv-fs-sm);
}

.main-header .dropdown-item {
    padding: .5rem 1.25rem;
    color: var(--lv-ink);
}

.main-header .dropdown-item:hover,
.main-header .dropdown-item:focus {
    background: var(--lv-platform);
    color: var(--lv-green-ink);
}

.main-header .dropdown-item[target="_blank"]::after {
    content: "\F1C5"; /* bi-box-arrow-up-right */
    font-family: "bootstrap-icons";
    margin-left: .4rem;
    font-size: .75em;
    opacity: .6;
}

.navbar-toggler {
    display: inline-flex;
    align-items: center;
    gap: .375rem;
    padding: .5rem .75rem;
    border: 1px solid var(--lv-rule);
    border-radius: var(--lv-radius-sm);
    color: var(--lv-ink);
    font-size: var(--lv-fs-sm);
    font-weight: 600;
}

.navbar-toggler:focus {
    box-shadow: var(--lv-focus);
}

.navbar-toggler i {
    font-size: 1.5rem;
    line-height: 1;
}


/* =====================================================
   ALERTAS DE SESIÓN (slot alerta)
===================================================== */

main > .alert {
    max-width: 1200px;
    margin: var(--lv-s3) auto 0;
    border: 0;
    border-left: 4px solid currentColor;
    border-radius: var(--lv-radius-sm);
    font-size: var(--lv-fs-sm);
}


/* =====================================================
   FRANJA CRTM (antes fija en la parte inferior)
===================================================== */

.crtm-band {
    background: var(--lv-white);
    border-top: 1px solid var(--lv-rule);
}

.crtm-band .lv-shell {
    display: flex;
    align-items: center;
    gap: var(--lv-s4);
    padding-top: var(--lv-s4);
    padding-bottom: var(--lv-s4);
}

.crtm-band h2 {
    flex: 0 0 auto;
    max-width: 14ch;
    margin: 0;
    color: var(--lv-ink-2);
    font-family: var(--lv-font);
    font-size: var(--lv-fs-sm);
    font-weight: 500;
    line-height: 1.35;
}

.crtm-logos {
    /* Una sola fila que ocupa todo el ancho restante: primer y último
       logotipo a ras del marco, el resto con el mismo espacio entre sí */
    flex: 1 1 auto;
    display: flex;
    flex-wrap: nowrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--lv-s3);
    margin: 0;
    padding: 0;
    list-style: none;
}

/* Pueden encogerse (sin deformarse) si en anchos justos no caben */
.crtm-logos li {
    flex: 0 1 auto;
    min-width: 0;
}

/* Misma altura para todos (proporción intacta). El tope de 74px es la
   altura real del logotipo más bajo (02.png): ninguno se amplía de más. */
.crtm-logos img {
    display: block;
    width: auto;
    height: clamp(32px, calc(3.6vw + 8px), 74px);
    max-width: 100%;
    object-fit: contain;
}


/* =====================================================
   PIE DE PÁGINA
===================================================== */

.main-footer {
    position: relative;
    padding: var(--lv-s6) 0 var(--lv-s4);
    background: var(--lv-platform);
    color: var(--lv-ink);
    border-top: 4px solid var(--lv-lime);
}

.footer-columns {
    display: grid;
    grid-template-columns: 1fr 1.2fr 1.4fr .9fr;
    gap: var(--lv-s5) var(--lv-s4);
}

.footer-column {
    min-width: 0;
}

.footer-column h3 {
    margin: 0 0 var(--lv-s2);
    font-size: var(--lv-fs-md);
    font-weight: 600;
}

.footer-column ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.footer-column li + li {
    margin-top: .625rem;
}

.footer-column a {
    color: var(--lv-ink-2);
    font-size: var(--lv-fs-sm);
    line-height: 1.4;
    text-decoration: none;
}

.footer-column a:hover {
    color: var(--lv-green-ink);
    text-decoration: underline;
}

.footer-certification {
    margin-top: var(--lv-s3);
}

.footer-certification img {
    display: block;
    width: auto;
    max-height: 96px;
    object-fit: contain;
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--lv-s2) var(--lv-s4);
    margin-top: var(--lv-s5);
    padding-top: var(--lv-s3);
    border-top: 1px solid var(--lv-rule);
    color: var(--lv-ink-2);
    font-size: var(--lv-fs-xs);
}

.footer-bottom p {
    margin: 0;
}

.footer-bottom a {
    color: var(--lv-ink-2);
}


/* =====================================================
   RESPONSIVE
===================================================== */

@media (max-width: 1199px) {

    .main-header .nav-link {
        padding: 0 .5rem !important;
    }

}

@media (max-width: 991px) {

    .main-header .navbar {
        min-height: 68px;
    }

    .main-header .navbar-collapse {
        border-top: 1px solid var(--lv-rule);
        margin: 0 calc(var(--lv-gutter) * -1);
        padding: 0 var(--lv-gutter);
        max-height: calc(100vh - 68px);
        overflow-y: auto;
    }

    .main-header .navbar-nav {
        gap: 0;
        padding: .5rem 0 1rem;
    }

    .main-header .nav-item {
        display: block;
    }

    .main-header .nav-link {
        padding: .875rem 0 .875rem 1rem !important;
        font-size: var(--lv-fs-base);
        border-bottom: 1px solid var(--lv-platform);
    }

    .main-header .nav-link:hover {
        box-shadow: inset 4px 0 0 var(--lv-rule);
    }

    .main-header .nav-link.active,
    .main-header .nav-link[aria-current="page"] {
        box-shadow: inset 4px 0 0 var(--lv-green);
    }

    .main-header .dropdown-menu {
        border: 0;
        border-left: 1px solid var(--lv-rule);
        margin-left: 1rem !important;
        border-radius: 0;
        box-shadow: none;
    }

    .footer-columns {
        grid-template-columns: 1fr 1fr;
    }

    .crtm-band .lv-shell {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--lv-s2);
    }

    .crtm-band h2 {
        max-width: none;
    }

    .crtm-logos {
        align-self: stretch;
    }
}

@media (max-width: 575px) {

    .container {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }

    .brand img {
        max-width: 140px;
    }

    .footer-columns {
        grid-template-columns: 1fr;
        gap: var(--lv-s4);
    }

    .main-footer {
        padding-top: var(--lv-s5);
    }

    /* Móvil: rejilla de dos columnas; el último, si queda solo, centrado */
    .crtm-logos {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        justify-items: center;
        gap: var(--lv-s3) var(--lv-s2);
    }

    .crtm-logos li:last-child:nth-child(odd) {
        grid-column: 1 / -1;
    }

    .crtm-logos img {
        height: 44px;
    }
}


/* =====================================================
   MOVIMIENTO REDUCIDO
===================================================== */

@media (prefers-reduced-motion: reduce) {

    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
}

/* El destino del enlace "Saltar al contenido" no necesita anillo de foco */
main:focus,
main:focus-visible {
    outline: none;
    box-shadow: none;
}