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

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

body {
    overflow-x: hidden;
}

/* Scroll reveal — progressive enhancement, only active when JS runs */
@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .scroll-reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fallback: content always visible even without JS */
@supports not (animation: fade-in 0.5s forwards) {
    .scroll-reveal {
        opacity: 1;
        transform: none;
    }
}

/* Navbar glass effect when scrolled */
.navbar-scrolled {
    background: rgba(10, 22, 40, 0.92) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(212, 168, 83, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0a1628;
}
::-webkit-scrollbar-thumb {
    background: #1a2d4a;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #d4a853;
}

/* Selection color */
::selection {
    background: rgba(212, 168, 83, 0.3);
    color: #fff;
}

/* Mobile menu transition */
#mobile-menu {
    animation: slideDown 0.3s ease forwards;
}
#mobile-menu.hidden {
    animation: slideUp 0.2s ease forwards;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes slideUp {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-10px); }
}

/* Gold shimmer effect on CTA buttons */
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

/* Pulse for emergency badge */
@keyframes soft-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animate-pulse {
    animation: soft-pulse 2s ease-in-out infinite;
}

/* Service card hover lift */
@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal.group:hover {
        transform: translateY(-4px);
    }
}