/* Base & Reset */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

/* Scroll Reveal — progressive enhancement via JS */
@media (prefers-reduced-motion: no-preference) {
    .scroll-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);
    }
}

/* Hero animations — only for below-fold content is animated, hero is always visible */
.hero-anim {
    opacity: 1;
    transform: translateY(0);
    animation: heroFadeIn 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.hero-anim:nth-child(2) { animation-delay: 0.1s; }
.hero-anim:nth-child(3) { animation-delay: 0.2s; }
.hero-anim:nth-child(4) { animation-delay: 0.3s; }
.hero-anim:nth-child(5) { animation-delay: 0.4s; }

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

/* Navbar scroll state */
.navbar-scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0,0,0,0.05);
}
.navbar-scrolled .nav-link { color: #334155 !important; }
.navbar-scrolled .nav-link:hover { color: #0d9488 !important; }

/* Mobile menu */
.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: #94a3b8; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #64748b; }

/* Selection */
::selection { background: rgba(13, 148, 136, 0.2); color: #0f766e; }