/* Enhanced Smooth Scrolling */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 70px;
}

body {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* scroll-behavior on * removed: applying it to every element hurts performance */

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* ── Keyframes ───────────────────────────────────── */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ── Nav entrance animations ─────────────────────── */
.nav-logo {
    animation: slideInRight 0.6s ease;
}

.nav-menu {
    animation: fadeInUp 0.6s ease 0.2s both;
}

.nav-button {
    animation: slideInRight 0.6s ease 0.4s both;
}

/* Active link styles */
.nav-link.active {
    color: var(--secondary-color);
}

.nav-link.active::after {
    width: 100%;
}

/* Ripple effect for button */
.cta-button {
    position: relative;
    overflow: hidden;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.6s linear;
    pointer-events: none;
}

/* Page loading fade-in */
body {
    opacity: 0;
    transition: opacity 0.3s ease;
}

body.loaded {
    opacity: 1;
}

/* Animate-in class for scroll animations */
.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

/* ── Scroll Reveal ───────────────────────────────── */
.scroll-animate {
    opacity: 0 !important;
    transform: translateY(24px);
    /* expo ease-out: snaps into place naturally */
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.scroll-animate.animate-in {
    opacity: 1 !important;
    transform: translateY(0);
}

/* Staggered animations */
.stagger-animate {
    opacity: 0 !important;
    transform: translateY(32px) scale(0.97);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.stagger-animate.animate-in {
    opacity: 1 !important;
    transform: translateY(0) scale(1);
}

/* Disable scroll animations on mobile */
@media (max-width: 768px) {
    .scroll-animate,
    .stagger-animate {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
        will-change: auto !important;
    }

    .scroll-animate.animate-in,
    .stagger-animate.animate-in {
        opacity: 1 !important;
        transform: none !important;
    }

    .scroll-animate {
        transform: translateY(20px);
    }

    .stagger-animate {
        transform: translateY(25px) scale(0.98);
    }
}

/* Animation delays for staggered effects */
.stagger-animate:nth-child(1)  { transition-delay: 0.1s; }
.stagger-animate:nth-child(2)  { transition-delay: 0.2s; }
.stagger-animate:nth-child(3)  { transition-delay: 0.3s; }
.stagger-animate:nth-child(4)  { transition-delay: 0.4s; }
.stagger-animate:nth-child(5)  { transition-delay: 0.5s; }
.stagger-animate:nth-child(6)  { transition-delay: 0.6s; }
.stagger-animate:nth-child(7)  { transition-delay: 0.7s; }
.stagger-animate:nth-child(8)  { transition-delay: 0.8s; }
.stagger-animate:nth-child(9)  { transition-delay: 0.9s; }
.stagger-animate:nth-child(10) { transition-delay: 1s; }

/* Enhanced hover for revealed elements */
.scroll-animate.animate-in:hover {
    transform: translateY(-5px);
    transition: transform 0.3s ease;
}

/* Loading states */
.scroll-animate:not(.animate-in) {
    pointer-events: none;
}

/* ── GPU compositing hints ───────────────────────── */
.scroll-animate {
    will-change: transform, opacity;
    backface-visibility: hidden;
    transform: translateZ(0);
}

.project-card,
.experience-item,
.skill-card,
.certificate-item,
.platform-card,
.detail-item,
.about-content>div:not(.about-image),
.about-image .image-container,
.section-header,
.hero-title,
.hero-subtitle,
.hero-description,
.hero-actions a,
.bento-box,
.footer-brand,
.footer-links>div {
    will-change: transform, opacity;
    backface-visibility: hidden;
    transform: translateZ(0);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .scroll-animate,
    .stagger-animate {
        transition: none;
        transform: none;
        opacity: 1;
    }
}