/* Base */
html {
    scroll-behavior: smooth;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Scroll reveal — progressive enhancement, hidden only when JS is available */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    .reveal:nth-child(1) { transition-delay: 0.05s; }
    .reveal:nth-child(2) { transition-delay: 0.12s; }
    .reveal:nth-child(3) { transition-delay: 0.19s; }
    .reveal:nth-child(4) { transition-delay: 0.26s; }

    .animate-on-scroll {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .animate-on-scroll.visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Navbar */
#navbar {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
}

#navbar.scrolled {
    border-bottom-color: rgba(0, 0, 0, 0.06);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}

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

#mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
}

/* Form focus styles */
input:focus,
textarea:focus {
    border-bottom-color: #0d9488 !important;
}

/* Smooth image loading */
img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #f8fafc;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Print */
@media print {
    #navbar, #mobile-menu {
        display: none;
    }

    body {
        color: #000;
        background: #fff;
    }
}