/* ==========================================================================
   Página /bienvenida — Estilos profesionales, modernos y coherentes
   ========================================================================== */

:root {
    --bienvenida-nav-h: 56px;
    --azul-vigara: #1E4D8B;
    --azul-vigara-dark: #153a6b;
    --azul-vigara-light: #2a6bb8;
    --gris-texto: #374151;
    --gris-texto-suave: #6b7280;
    --blanco-suave: #f8fafc;
    --sombra-suave: 0 1px 3px rgba(30, 77, 139, 0.06);
    --sombra-media: 0 4px 14px rgba(30, 77, 139, 0.08);
    --sombra-elevada: 0 12px 40px rgba(30, 77, 139, 0.12);
    --radio: 12px;
    --radio-lg: 16px;
    --radio-btn: 10px;
    --transicion: 0.25s ease;
    --transicion-lenta: 0.35s ease;
}

/* Scroll suave y scrollbar discreta */
.bienvenida-scroll-container {
    height: 100vh;
    overflow-y: auto;
    scroll-snap-type: y mandatory;
    scroll-behavior: smooth;
}

.bienvenida-scroll-container::-webkit-scrollbar {
    width: 8px;
}

.bienvenida-scroll-container::-webkit-scrollbar-track {
    background: rgba(30, 77, 139, 0.06);
    border-radius: 4px;
}

.bienvenida-scroll-container::-webkit-scrollbar-thumb {
    background: rgba(30, 77, 139, 0.25);
    border-radius: 4px;
}

.bienvenida-scroll-container::-webkit-scrollbar-thumb:hover {
    background: rgba(30, 77, 139, 0.4);
}

/* Secciones base */
.bienvenida-section {
    min-height: calc(100vh - var(--bienvenida-nav-h));
    scroll-snap-align: start;
    scroll-snap-stop: always;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3rem 0;
}

/* --------------------------------------------------------------------------
   HERO
   -------------------------------------------------------------------------- */
.bienvenida-hero {
    min-height: 100vh !important;
    background-image: url('/assets/imgs/bg.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.bienvenida-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(30, 77, 139, 0.9) 0%, rgba(21, 58, 107, 0.92) 50%, rgba(13, 42, 74, 0.94) 100%);
    z-index: 0;
}

.bienvenida-hero .bienvenida-hero-inner {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #fff;
    padding: 1rem 0;
}

.bienvenida-hero-label {
    font-family: "DM Sans", sans-serif;
    font-size: clamp(0.7rem, 1.5vw, 0.85rem);
    font-weight: 500;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    opacity: 0.92;
    margin-bottom: 0.85rem;
}

.bienvenida-hero-title {
    font-family: "Archivo Black", sans-serif;
    font-size: clamp(1.9rem, 4.8vw, 3.1rem);
    line-height: 1.12;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.bienvenida-hero-subtitle {
    font-family: "DM Sans", sans-serif;
    font-size: clamp(1.1rem, 2.2vw, 1.5rem);
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 0.4rem;
    opacity: 0.98;
}

.bienvenida-hero-tagline {
    font-family: "DM Sans", sans-serif;
    font-size: clamp(0.9rem, 1.8vw, 1.1rem);
    font-weight: 400;
    letter-spacing: 0.14em;
    text-transform: lowercase;
    opacity: 0.9;
    margin-bottom: 0;
}

.bienvenida-hero .bienvenida-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 2.25rem;
}

.bienvenida-hero .bienvenida-hero-actions .btn {
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radio-btn);
    transition: transform var(--transicion), box-shadow var(--transicion), background var(--transicion), color var(--transicion);
}

.bienvenida-hero .bienvenida-hero-btn-primary {
    background: #fff;
    color: var(--azul-vigara);
    border: none;
    box-shadow: var(--sombra-elevada);
}

.bienvenida-hero .bienvenida-hero-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
    background: #fff;
    color: var(--azul-vigara);
}

.bienvenida-hero .bienvenida-hero-actions .btn-outline-light {
    border-width: 2px;
}

.bienvenida-hero .bienvenida-hero-actions .btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: #fff;
    color: #fff;
    transform: translateY(-2px);
}

.bienvenida-hero .bienvenida-hero-actions .btn:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   FRANJAS DE SECCIONES (fondos alternos)
   -------------------------------------------------------------------------- */
.bienvenida-section--strip-0 {
    background-color: #f0f4f8;
    color: var(--azul-vigara);
}

.bienvenida-section--strip-1 {
    background-color: #ffffff;
    color: var(--azul-vigara);
}

.bienvenida-section--strip-2 {
    background-color: #eaeff5;
    color: var(--azul-vigara);
}

.bienvenida-section--strip-3 {
    background-color: #ffffff;
    color: var(--azul-vigara);
}

.bienvenida-section--strip-4 {
    background-color: #f0f4f8;
    color: var(--azul-vigara);
}

/* --------------------------------------------------------------------------
   SECCIONES DE VÍDEO — tipografía y espaciado
   -------------------------------------------------------------------------- */
.bienvenida-video-section .container {
    max-width: 1140px;
}

/* Dos columnas en pantallas grandes, una en móviles (Bootstrap .row + .col-12 .col-lg-6) */
.bienvenida-video-section .row {
    align-items: center;
}

.bienvenida-video-section h2 {
    font-family: "DM Sans", sans-serif;
    font-weight: 700;
    font-size: clamp(1.5rem, 2.2vw, 1.85rem);
    color: var(--azul-vigara);
    letter-spacing: -0.01em;
    margin-bottom: 0.5rem;
    line-height: 1.25;
}

.bienvenida-video-section .h5.text-muted {
    font-size: 1rem;
    font-weight: 500;
    color: var(--gris-texto-suave) !important;
    margin-bottom: 1rem;
}

.bienvenida-video-section p.mb-4 {
    color: var(--gris-texto);
    line-height: 1.65;
    font-size: 1rem;
    max-width: 32em;
}

.bienvenida-video-section .bienvenida-video-col {
    position: relative;
}

/* Móvil: una columna, texto arriba cuando usamos order-1/order-2 */
@media (max-width: 991.98px) {
    .bienvenida-video-section .row {
        flex-direction: column;
    }
    .bienvenida-video-section .bienvenida-video-col iframe {
        max-height: 50vh;
    }
}

.bienvenida-video-section .bienvenida-vimeo-embed {
    position: relative;
    border-radius: var(--radio-lg);
    overflow: hidden;
    box-shadow: var(--sombra-media);
    transition: box-shadow var(--transicion);
}

.bienvenida-video-section .bienvenida-vimeo-embed:hover {
    box-shadow: var(--sombra-elevada);
}

.bienvenida-video-section .bienvenida-video-col iframe {
    width: 100%;
    aspect-ratio: 9/16;
    max-height: 70vh;
    border: none;
    display: block;
    border-radius: var(--radio-lg);
}

.bienvenida-video-section .btn-primary {
    padding: 0.6rem 1.35rem;
    font-weight: 600;
    border-radius: var(--radio-btn);
    border: none;
    background: linear-gradient(135deg, var(--azul-vigara) 0%, var(--azul-vigara-light) 100%);
    box-shadow: var(--sombra-suave);
    transition: transform var(--transicion), box-shadow var(--transicion);
}

.bienvenida-video-section .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--sombra-media);
}

.bienvenida-video-section .btn-primary:focus-visible,
.bienvenida-btn-escuchar:focus-visible,
.bienvenida-btn-unmute:focus-visible {
    outline: 2px solid var(--azul-vigara);
    outline-offset: 2px;
}

/* Botón bajo el vídeo: activar sonido */
.bienvenida-btn-unmute {
    font-size: 0.8rem;
    padding: 0.45rem 1rem;
    margin-top: 0.6rem;
    border-radius: 2rem;
    border: 1px solid rgba(30, 77, 139, 0.35);
    background: rgba(255, 255, 255, 0.95);
    color: var(--azul-vigara);
    font-weight: 500;
    transition: background var(--transicion), border-color var(--transicion), transform var(--transicion), box-shadow var(--transicion);
}

.bienvenida-btn-unmute:hover {
    background: #fff;
    border-color: var(--azul-vigara);
    color: var(--azul-vigara);
    transform: translateY(-1px);
    box-shadow: var(--sombra-suave);
}

.bienvenida-btn-unmute .bienvenida-btn-emoji {
    margin-right: 0.4rem;
    font-style: normal;
}

/* Botón en columna de texto: escuchar video */
.bienvenida-btn-escuchar {
    font-size: 0.9rem;
    padding: 0.5rem 1.1rem;
    border-radius: var(--radio-btn);
    border: 2px solid var(--azul-vigara);
    background: transparent;
    color: var(--azul-vigara);
    font-weight: 600;
    transition: background var(--transicion), color var(--transicion), transform var(--transicion);
}

.bienvenida-btn-escuchar:hover {
    background: var(--azul-vigara);
    color: #fff;
    transform: translateY(-1px);
}

.bienvenida-btn-escuchar .bienvenida-btn-emoji {
    margin-right: 0.4rem;
    font-style: normal;
}

/* --------------------------------------------------------------------------
   GALERÍA
   -------------------------------------------------------------------------- */
.bienvenida-section-gallery {
    height: calc(100vh - var(--bienvenida-nav-h));
    max-height: calc(100vh - var(--bienvenida-nav-h));
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: 1.25rem 0 1.5rem;
}

.bienvenida-section-gallery .bienvenida-gallery-intro {
    flex-shrink: 0;
    margin-bottom: 1.25rem;
}

.bienvenida-section-gallery .bienvenida-gallery-intro .h1 {
    font-family: "DM Sans", sans-serif;
    font-weight: 700;
    font-size: clamp(1.4rem, 2.5vw, 1.75rem);
    color: var(--azul-vigara);
    line-height: 1.3;
    margin-bottom: 0.4rem;
}

.bienvenida-section-gallery .bienvenida-gallery-intro .lead {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--azul-vigara);
    opacity: 0.95;
}

.bienvenida-section-gallery .bienvenida-gallery-intro p.mb-0 {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--gris-texto);
    max-width: 52em;
}

.bienvenida-section-gallery .container {
    flex: 1 1 auto;
    min-height: 0;
}

.bienvenida-section-gallery .bienvenida-gallery-wrap {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    align-items: center;
}

.bienvenida-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 200px;
    gap: 0.6rem;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    max-height: 100%;
}

.bienvenida-gallery__item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radio-lg);
    background: linear-gradient(145deg, #e8eef3 0%, #dde4eb 100%);
    box-shadow: var(--sombra-suave);
    transition: transform var(--transicion-lenta), box-shadow var(--transicion-lenta);
}

.bienvenida-gallery__item::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 35%, rgba(30, 77, 139, 0.2) 100%);
    opacity: 0;
    transition: opacity var(--transicion);
    z-index: 1;
    pointer-events: none;
}

.bienvenida-gallery__item:hover {
    transform: scale(1.02);
    box-shadow: var(--sombra-elevada);
}

.bienvenida-gallery__item:hover::before {
    opacity: 1;
}

.bienvenida-gallery__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.45s ease;
}

.bienvenida-gallery__item:hover img {
    transform: scale(1.06);
}

/* Distribución 6 fotos */
.bienvenida-gallery__item:nth-child(1) { grid-column: span 2; grid-row: span 2; }
.bienvenida-gallery__item:nth-child(2) { grid-column: span 2; }
.bienvenida-gallery__item:nth-child(3) { grid-column: span 2; }
.bienvenida-gallery__item:nth-child(4) { grid-column: span 1; }
.bienvenida-gallery__item:nth-child(5) { grid-column: span 1; }
.bienvenida-gallery__item:nth-child(6) { grid-column: span 2; }

@media (max-width: 768px) {
    .bienvenida-gallery {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 160px;
        gap: 0.45rem;
    }
    .bienvenida-gallery__item:nth-child(n) {
        grid-column: span 1;
        grid-row: span 1;
    }
    .bienvenida-gallery__item:nth-child(1) { grid-column: span 2; grid-row: span 1; }
    .bienvenida-section-gallery .bienvenida-gallery-intro .h1 { font-size: 1.35rem; }
    .bienvenida-section-gallery .bienvenida-gallery-intro .lead { font-size: 0.95rem; }
    .bienvenida-section-gallery .bienvenida-gallery-intro p.mb-0 { font-size: 0.9rem; }
}

/* --------------------------------------------------------------------------
   SECCIÓN TITULACIONES
   -------------------------------------------------------------------------- */
.bienvenida-section .container .fw-bold.h4 {
    font-family: "DM Sans", sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--azul-vigara);
    margin-bottom: 1.25rem;
}

.bienvenida-section #NuestrosGrados h2 {
    font-family: "DM Sans", sans-serif;
    font-weight: 700;
    color: var(--azul-vigara);
}

.bienvenida-section #NuestrosGrados .lead {
    color: var(--gris-texto-suave);
    font-size: 1rem;
}

/* Cards de cursos dentro de bienvenida */
.bienvenida-section .card.curso {
    border-radius: var(--radio);
    border: 1px solid rgba(30, 77, 139, 0.12);
    box-shadow: var(--sombra-suave);
    transition: border-color var(--transicion), box-shadow var(--transicion), transform var(--transicion);
}

.bienvenida-section .card.curso:hover {
    border-color: var(--azul-vigara);
    box-shadow: var(--sombra-media);
    transform: translateY(-2px);
}

.bienvenida-section .card.curso .card-img-top {
    border-radius: var(--radio) var(--radio) 0 0;
}

/* --------------------------------------------------------------------------
   SECCIÓN FORMULARIO
   -------------------------------------------------------------------------- */
.bienvenida-section .container.text-center h2 {
    font-family: "DM Sans", sans-serif;
    font-weight: 700;
    font-size: clamp(1.35rem, 2vw, 1.65rem);
    color: var(--azul-vigara);
    margin-bottom: 0.5rem;
}

.bienvenida-section .container.text-center h4 {
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--gris-texto-suave);
    margin-bottom: 1.5rem;
}

/* Card curso hover (compartido con welcome cuando se usa el partial) */
.card.curso:hover {
    border: 2px solid var(--azul-vigara);
}