/**
 * Pure Planning - Scroll Animations & Transitions
 * IntersectionObserver-based reveal animations
 */

/* ===== Scroll Reveal Base ===== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Reveal Variants ===== */
.reveal--left {
    transform: translateX(-40px);
}
.reveal--left.visible {
    transform: translateX(0);
}

.reveal--right {
    transform: translateX(40px);
}
.reveal--right.visible {
    transform: translateX(0);
}

.reveal--scale {
    transform: scale(0.9);
}
.reveal--scale.visible {
    transform: scale(1);
}

.reveal--fade {
    transform: none;
}

/* ===== Stagger Children ===== */
.stagger > * {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
}

.stagger.visible > *:nth-child(1) { transition-delay: 0.1s; }
.stagger.visible > *:nth-child(2) { transition-delay: 0.2s; }
.stagger.visible > *:nth-child(3) { transition-delay: 0.3s; }
.stagger.visible > *:nth-child(4) { transition-delay: 0.4s; }
.stagger.visible > *:nth-child(5) { transition-delay: 0.5s; }
.stagger.visible > *:nth-child(6) { transition-delay: 0.6s; }
.stagger.visible > *:nth-child(7) { transition-delay: 0.7s; }
.stagger.visible > *:nth-child(8) { transition-delay: 0.8s; }
.stagger.visible > *:nth-child(9) { transition-delay: 0.9s; }

.stagger.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Parallax ===== */
.parallax-container {
    position: relative;
    overflow: hidden;
}

.parallax-bg {
    position: absolute;
    inset: -20% 0;
    will-change: transform;
}

.parallax-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ===== Counter Animation ===== */
.counter[data-target] {
    transition: none;
}

/* ===== Image Zoom on Scroll ===== */
.zoom-on-scroll {
    overflow: hidden;
    border-radius: var(--radius-lg);
}

.zoom-on-scroll img {
    transition: transform 1.2s var(--ease-out);
    will-change: transform;
}

.zoom-on-scroll.visible img {
    transform: scale(1.05);
}

/* ===== Text Reveal Line by Line ===== */
.text-reveal {
    overflow: hidden;
}

.text-reveal__line {
    display: block;
    transform: translateY(100%);
    transition: transform var(--duration-slow) var(--ease-out);
}

.text-reveal.visible .text-reveal__line {
    transform: translateY(0);
}

.text-reveal.visible .text-reveal__line:nth-child(2) {
    transition-delay: 0.1s;
}
.text-reveal.visible .text-reveal__line:nth-child(3) {
    transition-delay: 0.2s;
}

/* ===== Marquee / Infinite Scroll ===== */
.marquee {
    overflow: hidden;
    white-space: nowrap;
}

.marquee__inner {
    display: inline-flex;
    animation: marquee 30s linear infinite;
}

.marquee__inner > * {
    padding: 0 var(--space-3xl);
    font-family: var(--font-serif);
    font-size: var(--text-3xl);
    font-style: italic;
    color: var(--border-medium);
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ===== Reduce Motion ===== */
@media (prefers-reduced-motion: reduce) {
    .reveal,
    .stagger > *,
    .parallax-bg,
    .zoom-on-scroll img,
    .text-reveal__line {
        transition: none !important;
        animation: none !important;
        transform: none !important;
        opacity: 1 !important;
    }

    .hero__tagline,
    .hero__title,
    .hero__subtitle,
    .hero__actions,
    .hero__scroll {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}