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

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

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(20, 184, 166, 0.3);
    color: #f1f5f9;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #0f172a;
}

::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #334155;
}

/* Reveal animations — progressive enhancement, only active when JS runs and motion is preferred */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Hero text entrance — visible by default, enhanced with JS */
.hero-tag {
    opacity: 1;
    transform: none;
}

.hero-heading {
    opacity: 1;
    transform: none;
}

.hero-cta {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: no-preference) {
    .hero-tag {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .hero-heading {
        opacity: 0;
        transform: translateY(25px);
        transition: opacity 0.7s ease 0.15s, transform 0.7s ease 0.15s;
    }
    .hero-cta {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.7s ease 0.3s, transform 0.7s ease 0.3s;
    }
    .hero-tag.hero-in,
    .hero-heading.hero-in,
    .hero-cta.hero-in {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Gold shimmer on hover for special elements */
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

.glow-brand {
    box-shadow: 0 0 40px -10px rgba(20, 184, 166, 0.3);
}

.glow-gold {
    box-shadow: 0 0 40px -10px rgba(212, 160, 23, 0.25);
}

/* Subtle gradient border effect */
.gradient-border {
    position: relative;
    border-radius: 1rem;
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 1rem;
    padding: 1px;
    background: linear-gradient(135deg, rgba(20,184,166,0.3), rgba(212,160,23,0.2), rgba(20,184,166,0.1));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

/* Custom select arrow */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

/* Mobile menu transition */
#mobile-menu {
    transition: opacity 0.3s ease, pointer-events 0.3s ease;
}

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

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

/* Navbar active state */
.nav-link.active {
    color: #f1f5f9;
    background: rgba(255, 255, 255, 0.05);
}

/* Smooth image loading */
img {
    loading: lazy;
    will-change: transform;
}