*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    overflow-x: hidden;
}

/* Scroll reveal base — content visible by default */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

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

    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
    .reveal-delay-5 { transition-delay: 0.5s; }
}

/* Navbar scroll state */
.navbar-scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

/* Custom selection color */
::selection {
    background: #99f6e4;
    color: #134e4a;
}

/* Subtle gradient text utility */
.text-gradient {
    background: linear-gradient(135deg, #0d9488 0%, #14b8a6 50%, #2dd4bf 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Focus visible for accessibility */
:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
}

/* Smooth image loading */
img {
    display: block;
    max-width: 100%;
}

/* Hide scrollbar on mobile menu trigger */
body.menu-open {
    overflow: hidden;
}