/* SPA shell — Instagram-style smooth navigation */

:root {
    --spa-ease: cubic-bezier(0.25, 0.1, 0.25, 1);
    --spa-duration: 180ms;
}

/* Bottom nav never participates in page snapshots — stays crisp while content swaps */
.bottom-nav {
    view-transition-name: none;
    -webkit-view-transition-name: none;
    z-index: 10050;
    transform: translateZ(0);
    backface-visibility: hidden;
}

#spa-main {
    position: relative;
    min-height: calc(100vh - 120px);
    overflow-x: hidden;
    view-transition-name: spa-content;
}

.spa-route {
    width: 100%;
}

/* Only animate injected views — not home (avoids re-zoom every time you tap Home) */
#spa-view.spa-route.is-entering {
    animation: spa-enter var(--spa-duration) var(--spa-ease) forwards;
}

#spa-view.spa-route[hidden] {
    display: none !important;
}

@keyframes spa-enter {
    from {
        opacity: 0;
        transform: translate3d(0, 6px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

/* View Transitions — content only, not whole page (icons won't freeze) */
@supports (view-transition-name: none) {
    ::view-transition-old(spa-content),
    ::view-transition-new(spa-content) {
        animation-duration: var(--spa-duration);
        animation-timing-function: var(--spa-ease);
    }
}

#spa-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    width: 0;
    background: var(--jf-accent, #0a0a0a);
    z-index: 100000;
    transition: width 0.15s ease;
    pointer-events: none;
    opacity: 0;
}

#spa-progress.is-busy {
    opacity: 1;
    width: 40%;
}

#spa-progress.is-done {
    width: 100%;
    opacity: 0;
    transition: width 0.1s ease, opacity 0.2s ease;
}

/* Tab bar — works with store-nav labels */
.bottom-nav.store-nav ul li a,
.bottom-nav ul li a[data-spa-route] {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9ca3af !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    border-radius: 12px !important;
    padding: 10px !important;
    font-size: 22px !important;
    position: relative !important;
    top: auto !important;
    left: auto !important;
    transform: none;
    transition: color 0.1s ease !important;
    -webkit-tap-highlight-color: transparent;
}

.bottom-nav ul li a[data-spa-route] i {
    display: block;
    transition: transform 0.12s var(--spa-ease), color 0.1s ease;
    will-change: transform;
}

.bottom-nav ul li a[data-spa-route]:active i {
    transform: scale(0.88);
}

.bottom-nav ul li a[data-spa-route].active {
    color: var(--spa-nav-active) !important;
    background: transparent !important;
}

.bottom-nav ul li a[data-spa-route].active i {
    transform: scale(1.1);
}

/* Pressed state before navigation completes */
.bottom-nav ul li a[data-spa-route].is-pressed i {
    transform: scale(0.9);
}

.bottom-nav ul li a[data-spa-route].is-pending:not(.active) {
    color: #a3a3a3 !important;
}

/* Desktop: horizontal / sidebar nav — row layout and hover (no tap-scale) */
@media (min-width: 768px) {
    .bottom-nav ul li a[data-spa-route]:active i {
        transform: none;
    }

    .bottom-nav ul li a[data-spa-route].active i {
        transform: none;
    }

    .bottom-nav ul li a[data-spa-route] i {
        font-size: 18px !important;
    }
}

@media (min-width: 1024px) {
    .bottom-nav.store-nav {
        z-index: 1200 !important;
    }

    #spa-main {
        min-height: calc(100vh - var(--jf-header-h, 64px));
    }
}