/* ═══════════════════════════════════════════
   ANIMATIONS — Scroll reveals, page transitions
   ═══════════════════════════════════════════ */

/* ── Scroll Reveal Base ── */
.scroll-reveal {
    opacity: 0;
    transform: translateY(1.5rem);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger support — add data-delay="1" through "5" */
.scroll-reveal[data-delay="1"] { transition-delay: 0.1s; }
.scroll-reveal[data-delay="2"] { transition-delay: 0.2s; }
.scroll-reveal[data-delay="3"] { transition-delay: 0.3s; }
.scroll-reveal[data-delay="4"] { transition-delay: 0.4s; }
.scroll-reveal[data-delay="5"] { transition-delay: 0.5s; }

/* ── Page Enter Animation ── */
@keyframes pageEnter {
    from {
        opacity: 0;
        transform: translateY(0.75rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-enter {
    animation: pageEnter 0.35s ease-out;
}

/* ── Fade In Up (reusable) ── */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(1rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.4s ease-out both;
}

/* ── Fade In (simple) ── */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.3s ease-out both;
}

/* ── Scale In ── */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.scale-in {
    animation: scaleIn 0.2s ease-out both;
}

/* ── Loading Spinner ── */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-spinner {
    width: 2.5rem;
    height: 2.5rem;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-spinner--sm {
    width: 1.25rem;
    height: 1.25rem;
    border-width: 2px;
}

.loading-spinner--inverse {
    border-color: rgba(255, 255, 255, 0.35);
    border-top-color: #ffffff;
}

/* ── Accessibility: Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
    .scroll-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .page-enter,
    .fade-in-up,
    .fade-in,
    .scale-in {
        animation: none;
    }

    .loading-spinner {
        animation-duration: 1.5s;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}