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

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

body {
    overflow-x: hidden;
}

/* Navbar scroll state */
#navbar.scrolled {
    background: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(123, 45, 59, 0.2);
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

/* Mobile menu */
#mobile-menu {
    animation: slideDown 0.25s ease-out;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Service cards */
.service-card {
    will-change: transform;
}

/* Scroll reveal (progressive enhancement — only active when JS loads and user prefers motion) */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .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; }
    .reveal-delay-4 { transition-delay: 0.4s; }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #111;
}
::-webkit-scrollbar-thumb {
    background: #7B2D3B;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #a01a2e;
}

/* Selection */
::selection {
    background: rgba(123, 45, 59, 0.6);
    color: #f9d4d9;
}