/**
 * Visa de Estudiante F-1 — landing pública
 * Reutiliza los design tokens del sitio (design-tokens.css / components.css).
 * Todas las clases van con prefijo .svl- (Student Visa Landing) para no
 * colisionar con el resto del sitio. Patrón visual calcado de partners.css.
 */

/* ===================================================================
   Botones
   =================================================================== */
.svl-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-full);
    font-family: var(--font-family-base);
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    line-height: 1;
    text-decoration: none;
    cursor: pointer;
    border: 2px solid transparent;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.svl-btn svg { width: 18px; height: 18px; }

.svl-btn--primary {
    background: var(--color-full-primary);
    color: #fff;
    border-color: var(--color-full-primary);
}
.svl-btn--primary:hover {
    background: var(--color-full-secondary);
    border-color: var(--color-full-secondary);
    color: #fff;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-full-md);
}

/* Botón blanco para usar sobre la banda de color del CTA final */
.svl-btn--onlight {
    background: #fff;
    color: var(--color-full-secondary);
    border-color: #fff;
}
.svl-btn--onlight:hover {
    background: #fff;
    color: var(--color-full-secondary);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.25);
}

/* ===================================================================
   Hero (sin imagen: una sola columna centrada)
   =================================================================== */
.svl-hero {
    background: #eff3fd;
    /* Top padding compensa el navbar fijo (118px = top-bar + nav). */
    padding: calc(118px + var(--space-3xl)) 0 var(--space-4xl);
}
.svl-hero__inner {
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
}
.svl-eyebrow {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: var(--weight-bold);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-full-secondary);
    background: rgba(59, 130, 246, 0.12);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
}
.svl-hero__title {
    font-size: var(--text-5xl);
    font-weight: var(--weight-bold);
    line-height: var(--leading-tight);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-md);
}
.svl-hero__subtitle {
    font-size: var(--text-lg);
    line-height: var(--leading-relaxed);
    color: var(--color-text-secondary);
    margin: 0 0 var(--space-xl);
}
.svl-hero__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}
.svl-hero__note {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin: 0;
}

/* ===================================================================
   Secciones genéricas
   =================================================================== */
.svl-section {
    padding: var(--space-4xl) 0;
}
.svl-section--muted {
    background: var(--color-bg-secondary);
}
.svl-section__head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-2xl);
}
.svl-section__title {
    font-size: var(--text-4xl);
    font-weight: var(--weight-bold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-sm);
}
.svl-section__lead {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin: 0;
}

/* ===================================================================
   Cómo funciona — pasos
   =================================================================== */
.svl-steps {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}
.svl-step {
    position: relative;
    background: var(--color-bg-primary);
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-lg);
    padding: var(--space-xl) var(--space-lg);
    box-shadow: var(--shadow-sm);
}
.svl-step__num {
    position: absolute;
    top: calc(-1 * var(--space-md));
    left: var(--space-lg);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-full-primary);
    color: #fff;
    font-weight: var(--weight-bold);
    font-size: var(--text-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}
.svl-step__icon {
    width: 44px;
    height: 44px;
    color: var(--color-full-primary);
    margin: var(--space-sm) 0 var(--space-md);
}
.svl-step__icon svg { width: 100%; height: 100%; }
.svl-step__title {
    font-size: var(--text-lg);
    font-weight: var(--weight-semibold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-xs);
}
.svl-step__text {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    color: var(--color-text-muted);
    margin: 0;
}

/* ===================================================================
   Para quién es — cards de audiencia
   =================================================================== */
.svl-audience-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}
.svl-audience-card {
    background: var(--color-bg-primary);
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: left;
}
.svl-audience-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(59, 130, 246, 0.10);
    color: var(--color-full-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}
.svl-audience-card__icon svg { width: 24px; height: 24px; }
.svl-audience-card__title {
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-xs);
}
.svl-audience-card__text {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    color: var(--color-text-muted);
    margin: 0;
}

/* ===================================================================
   Por qué USAVisa Travel — beneficios
   =================================================================== */
.svl-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-lg);
}
.svl-benefit {
    background: var(--color-bg-primary);
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: left;
}
.svl-benefit__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(59, 130, 246, 0.10);
    color: var(--color-full-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}
.svl-benefit__icon svg { width: 24px; height: 24px; }
.svl-benefit__title {
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-xs);
}
.svl-benefit__text {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    color: var(--color-text-muted);
    margin: 0;
}

/* ===================================================================
   FAQ — acordeón CSS-only (<details>/<summary>)
   =================================================================== */
.svl-faq {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    max-width: 800px;
    margin: 0 auto;
}
.svl-faq-item {
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-base);
}
.svl-faq-item[open] {
    box-shadow: var(--shadow-lg);
}
.svl-faq-item summary {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-xl);
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    color: var(--color-text-primary);
    cursor: pointer;
    list-style: none;
}
.svl-faq-item summary::marker,
.svl-faq-item summary::-webkit-details-marker {
    display: none;
}
.svl-faq-item summary::after {
    content: '';
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--color-full-primary);
    background-image: linear-gradient(var(--color-full-primary), var(--color-full-primary));
    background-repeat: no-repeat;
    background-position: center;
    background-size: 8px 8px;
    transform: rotate(0deg);
    transition: transform var(--transition-base);
}
.svl-faq-item[open] summary::after {
    transform: rotate(45deg);
}
.svl-faq-item summary:focus-visible {
    outline: 3px solid rgba(59, 130, 246, 0.4);
    outline-offset: 4px;
}
.svl-faq-item__content {
    padding: 0 var(--space-xl) var(--space-lg);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}
.svl-faq-item__content p {
    margin: 0;
}

/* ===================================================================
   CTA final — banda de color
   =================================================================== */
.svl-cta {
    background: var(--gradient-full);
    padding: var(--space-3xl) 0;
}
.svl-cta__inner {
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
}
.svl-cta__title {
    font-size: var(--text-3xl);
    font-weight: var(--weight-bold);
    color: #fff;
    margin: 0 0 var(--space-sm);
}
.svl-cta__text {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.9);
    margin: 0 0 var(--space-xl);
}
.svl-cta__disclaimer {
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.75);
    line-height: var(--leading-relaxed);
    max-width: 520px;
    margin: var(--space-xl) auto 0;
}

/* ===================================================================
   Responsive
   =================================================================== */
@media (max-width: 991px) {
    /* En ≤992px el top-bar se oculta: el navbar mide ~64px. */
    .svl-hero { padding: calc(64px + var(--space-2xl)) 0 var(--space-3xl); }
    .svl-steps { grid-template-columns: repeat(2, 1fr); }
    .svl-audience-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 575px) {
    .svl-hero__title { font-size: var(--text-4xl); }
    .svl-section { padding: var(--space-3xl) 0; }
    .svl-section__title { font-size: var(--text-3xl); }
    .svl-steps { grid-template-columns: 1fr; }
    .svl-audience-grid { grid-template-columns: 1fr; }
    .svl-btn { width: 100%; }
    .svl-hero__actions { flex-direction: column; }
    .svl-faq-item summary { padding: var(--space-md) var(--space-lg); }
    .svl-faq-item__content { padding: 0 var(--space-lg) var(--space-md); }
}

/* === compartido con wizard ===
   Variables locales por si el wizard (otro archivo) necesita alinear
   acentos con esta landing. No agregar estilos del wizard acá.
*/
:root {
    --svl-accent: var(--color-full-primary);
    --svl-accent-dark: var(--color-full-secondary);
}