/* ===== LOADING / SHIMMER ===== */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

.shimmer {
    background: linear-gradient(90deg,
            var(--bg-card) 25%,
            var(--bg-elevated) 50%,
            var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
}

/* ===== SCROLL INDICATOR ===== */
@keyframes scrollPulse {

    0%,
    100% {
        opacity: 0.3;
        transform: scaleY(0.5);
        transform-origin: top;
    }

    50% {
        opacity: 1;
        transform: scaleY(1);
    }
}

/* ===== FLOAT ===== */
@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* ===== REVEAL STATES ===== */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.34, 1.56, 0.64, 1),
        transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ===== CARD TILT ON HOVER (CSS fallback) ===== */
.tilt-hover {
    transition: transform var(--transition-smooth);
}

.tilt-hover:hover {
    transform: perspective(1000px) rotateX(2deg) rotateY(-2deg) scale(1.02);
}

/* ===== GLOW EFFECT ===== */
.glow-effect {
    position: relative;
}

.glow-effect::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--gradient-sdg-colors));
    border-radius: inherit;
    opacity: 0;
    z-index: -1;
    filter: blur(16px);
    transition: opacity var(--transition-fast);
}

.glow-effect:hover::before {
    opacity: 0.4;
}

/* ===== MAGNETIC LINK INDICATOR ===== */
[data-magnetic] {
    display: inline-block;
    transition: transform var(--transition-elastic);
}

/* ===== PARALLAX LAYERS ===== */
.parallax-slow {
    will-change: transform;
}

.parallax-medium {
    will-change: transform;
}

.parallax-fast {
    will-change: transform;
}

/* ===== STAGGER CHILDREN ===== */
.stagger-children>* {
    opacity: 0;
    transform: translateY(20px);
}

.stagger-children.active>* {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-children.active>*:nth-child(1) {
    transition-delay: 0.05s;
}

.stagger-children.active>*:nth-child(2) {
    transition-delay: 0.1s;
}

.stagger-children.active>*:nth-child(3) {
    transition-delay: 0.15s;
}

.stagger-children.active>*:nth-child(4) {
    transition-delay: 0.2s;
}

.stagger-children.active>*:nth-child(5) {
    transition-delay: 0.25s;
}

.stagger-children.active>*:nth-child(6) {
    transition-delay: 0.3s;
}