/* Base styles and custom utilities */

html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

/* Scroll reveal animations — progressive enhancement only */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero animations — only for below-fold decorative elements */
.hero-anim {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

@media (prefers-reduced-motion: no-preference) {
    .hero-anim {
        opacity: 0;
        transform: translateY(20px);
        animation: heroFadeIn 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    }
    
    .hero-anim:nth-child(2) { animation-delay: 0.15s; }
    .hero-anim:nth-child(3) { animation-delay: 0.3s; }
    .hero-anim:nth-child(4) { animation-delay: 0.45s; }
}

@keyframes heroFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Navbar scroll state */
.nav-scrolled {
    background: rgba(15, 23, 42, 0.95) !important;
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-scrolled .nav-link {
    color: rgba(255, 255, 255, 0.85);
}

/* Mobile menu transitions */
.mobile-menu-open {
    opacity: 1 !important;
    pointer-events: all !important;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #0d9488;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0f766e;
}

/* Selection color */
::selection {
    background: #0d9488;
    color: white;
}

/* Image aspect ratio fallback */
img {
    max-width: 100%;
    height: auto;
}