/* ================================================
   BE YOURSELF - ANIMATIONS
   ================================================ */

/* ------------------------------------------------
   SCROLL ANIMATIONS (Intersection Observer driven)
   ------------------------------------------------ */

/* Base state - hidden */
.animate-on-scroll {
    opacity: 0;
    transition: 
        opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: opacity, transform;
}

/* Specific initial positions */
.animate-on-scroll[data-animation="fade-up"] {
    transform: translateY(40px);
}

.animate-on-scroll[data-animation="fade-down"] {
    transform: translateY(-40px);
}

.animate-on-scroll[data-animation="fade-left"] {
    transform: translateX(40px);
}

.animate-on-scroll[data-animation="fade-right"] {
    transform: translateX(-40px);
}

.animate-on-scroll[data-animation="fade-in"] {
    transform: scale(0.95);
}

.animate-on-scroll[data-animation="zoom-in"] {
    transform: scale(0.8);
}

/* Visible state */
.animate-on-scroll.visible {
    opacity: 1;
    transform: translate(0) scale(1);
}

/* Delays */
.animate-on-scroll[data-delay="100"] { transition-delay: 100ms; }
.animate-on-scroll[data-delay="200"] { transition-delay: 200ms; }
.animate-on-scroll[data-delay="300"] { transition-delay: 300ms; }
.animate-on-scroll[data-delay="400"] { transition-delay: 400ms; }
.animate-on-scroll[data-delay="500"] { transition-delay: 500ms; }
.animate-on-scroll[data-delay="600"] { transition-delay: 600ms; }
.animate-on-scroll[data-delay="800"] { transition-delay: 800ms; }

/* ------------------------------------------------
   COUNTER ANIMATION
   ------------------------------------------------ */
.social-proof__number {
    font-variant-numeric: tabular-nums;
}

/* ------------------------------------------------
   HOVER MICRO-INTERACTIONS
   ------------------------------------------------ */

/* Card tilt on hover (mouse-dependent, done in JS) */
.service-card {
    transform-style: preserve-3d;
}

/* Link underline animation */
.footer__links a {
    position: relative;
}

.footer__links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-primary);
    transition: width var(--transition-fast);
}

.footer__links a:hover::after {
    width: 100%;
}

/* Nav link underline grow */
.header__nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

.header__nav-link:hover::before {
    width: 20px;
}

/* ------------------------------------------------
   LOADING / SKELETON
   ------------------------------------------------ */
@keyframes shimmer {
    0% { background-position: -200px 0; }
    100% { background-position: calc(200px + 100%) 0; }
}

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

/* ------------------------------------------------
   STAGGER ANIMATION FOR GRIDS
   ------------------------------------------------ */
.services__grid .service-card:nth-child(1) { transition-delay: 0ms; }
.services__grid .service-card:nth-child(2) { transition-delay: 100ms; }
.services__grid .service-card:nth-child(3) { transition-delay: 200ms; }
.services__grid .service-card:nth-child(4) { transition-delay: 300ms; }
.services__grid .service-card:nth-child(5) { transition-delay: 400ms; }
.services__grid .service-card:nth-child(6) { transition-delay: 500ms; }

.cases__grid .case-card:nth-child(1) { transition-delay: 0ms; }
.cases__grid .case-card:nth-child(2) { transition-delay: 100ms; }
.cases__grid .case-card:nth-child(3) { transition-delay: 200ms; }
.cases__grid .case-card:nth-child(4) { transition-delay: 300ms; }
.cases__grid .case-card:nth-child(5) { transition-delay: 400ms; }
.cases__grid .case-card:nth-child(6) { transition-delay: 500ms; }

/* ------------------------------------------------
   PREFERS REDUCED MOTION
   ------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .animate-on-scroll {
        opacity: 1;
        transform: none;
        transition: none;
    }
    
    .hero__cube {
        animation: none;
        transform: rotateX(-20deg) rotateY(-30deg);
    }
    
    .particle {
        animation: none;
        display: none;
    }
    
    .hero__float-card {
        animation: none;
    }
    
    .btn--glow {
        animation: none;
    }
}