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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    background-color: #040d1f;
    color: #ffffff;
    font-family: 'DM Sans', sans-serif;
}

/* Marquee animation for gallery */
@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.animate-marquee {
    animation: marquee 30s linear infinite;
}

/* Scroll reveal (progressive enhancement — only active when JS runs and motion preferred) */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(32px);
        transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .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; }
}

/* Mobile menu transitions */
.mobile-link {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.2s ease;
}

#mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.25s; }
#mobile-menu.open .mobile-link:nth-child(6) { transition-delay: 0.3s; }

/* Hamburger animation */
.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#menu-btn.active .menu-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

#menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
}

#menu-btn.active .menu-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
    width: 24px;
    margin-right: 0;
}

/* Navbar scroll state */
#navbar.scrolled {
    background: rgba(4, 13, 31, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* Selection color */
::selection {
    background: rgba(45, 212, 160, 0.3);
    color: #ffffff;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .animate-marquee {
        animation: none;
    }
}