/*
============================================================
NAVIGATION.CSS
============================================================
*/

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: #080d1a;
    border: none;
    border-radius: 50%;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, bottom 0.3s ease;
    box-shadow: var(--glow-green);
    z-index: 900;
}

.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top.above-footer {
    bottom: calc(2rem + 52px);
}

.scroll-to-top:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

.scroll-to-top:active { transform: translateY(0); }

/* Accessibility */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    z-index: 1000;
    border-radius: 0 0 8px 0;
}

.skip-link:focus { top: 0; }

/* ── Mobile ── */
@media (max-width: 768px) {
    .scroll-to-top {
        bottom: 1.25rem;
        right: 1.25rem;
        width: 42px;
        height: 42px;
    }

    .scroll-to-top.above-footer {
        bottom: calc(1.25rem + 52px);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}