/* ====== static/css/animations.css ====== */
/* PREMIUM APPLE-LEVEL UI ANIMATIONS */

/* 1. Global Fade-In on Scroll (Vanilla JS IntersectionObserver targets these) */
.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 800ms cubic-bezier(0.16, 1, 0.3, 1), transform 800ms cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}
.reveal-up.active {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger Delays for Cards */
.delay-100 { transition-delay: 100ms; }
.delay-150 { transition-delay: 150ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }

/* 2. Hover Micro-Interactions (Expensive Feel) */
.hover-card {
    transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 400ms cubic-bezier(0.16, 1, 0.3, 1), border-color 400ms ease;
    will-change: transform, box-shadow;
}
.hover-card:hover {
    transform: scale(1.02) translateY(-4px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.08); /* Deep premium shadow */
    border-color: rgba(37, 99, 235, 0.2);
}

/* 3. Button Micro-Interactions */
.hover-btn {
    transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 300ms ease, background-color 300ms ease;
    will-change: transform, box-shadow;
}
.hover-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.3);
}
.hover-btn:active {
    transform: scale(0.97) translateY(0);
}

/* 4. Subtle Image Zoom */
.hover-img-container {
    overflow: hidden;
}
.hover-img-container img {
    transition: transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}
.hover-img-container:hover img {
    transform: scale(1.05);
}

/* 5. Smooth Floating Animation */
@keyframes float-subtle {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
    100% { transform: translateY(0px); }
}
.animate-float {
    animation: float-subtle 6s ease-in-out infinite;
    will-change: transform;
}

/* Hero Title on Load */
.hero-reveal {
    animation: hero-reveal-up 1000ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
    transform: translateY(40px);
}
.hero-reveal-delay-1 { animation-delay: 200ms; }
.hero-reveal-delay-2 { animation-delay: 400ms; }
.hero-reveal-delay-3 { animation-delay: 600ms; }

@keyframes hero-reveal-up {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}