/*
 |--------------------------------------------------------------------------
 | InstalTIME - Acciones flotantes globales
 |--------------------------------------------------------------------------
 |
 | Este archivo contiene estilos reutilizables para pequeñas acciones fijas
 | de interfaz. El primer uso es la flecha "Subir al inicio", presente en
 | Admin, Sala Trabajador, landing pública y PWA.
 |
 | No contiene lógica de negocio y no modifica fichajes, PIN, GPS ni modo real.
 |
 */

.it-back-to-top {
    position: fixed;
    right: clamp(1rem, 2vw, 1.65rem);
    bottom: calc(1.15rem + env(safe-area-inset-bottom));
    z-index: 45;
    display: grid;
    width: 3.05rem;
    height: 3.05rem;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, .72);
    border-radius: 999px;
    background:
        linear-gradient(135deg, rgba(15, 159, 132, .98), rgba(20, 184, 166, .98));
    color: #ffffff;
    box-shadow:
        0 18px 38px rgba(15, 23, 42, .18),
        0 10px 24px rgba(15, 159, 132, .28);
    cursor: pointer;
    opacity: 0;
    transform: translateY(.9rem) scale(.94);
    transition:
        opacity .18s ease,
        transform .18s ease,
        box-shadow .18s ease,
        background .18s ease;
}

.it-back-to-top[hidden] {
    display: none !important;
}

.it-back-to-top.is-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.it-back-to-top:hover,
.it-back-to-top:focus-visible {
    background:
        linear-gradient(135deg, rgba(8, 116, 95, .98), rgba(15, 159, 132, .98));
    box-shadow:
        0 22px 46px rgba(15, 23, 42, .22),
        0 12px 28px rgba(15, 159, 132, .34);
    outline: none;
    transform: translateY(-.1rem) scale(1.03);
}

.it-back-to-top__icon {
    display: grid;
    width: 1.55rem;
    height: 1.55rem;
    place-items: center;
}

.it-back-to-top__svg {
    display: block;
    width: 1.55rem;
    height: 1.55rem;
    fill: currentColor;
}

@media (max-width: 768px) {
    .it-back-to-top {
        right: 1rem;
        bottom: calc(5.25rem + env(safe-area-inset-bottom));
        width: 3rem;
        height: 3rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .it-back-to-top {
        transition: none;
    }
}