/* === CSS Custom Properties === */
:root {
    --midnight-900: #050a18;
    --midnight-800: #0a1628;
    --midnight-700: #0f2035;
    --midnight-600: #152d48;
    --mint-400: #5eead4;
    --mint-500: #34d399;
    --mint-600: #10b981;
}

/* === Reset & Base === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--midnight-900);
    color: #ffffff;
    overflow-x: hidden;
}

::selection {
    background: rgba(94, 234, 212, 0.3);
    color: #ffffff;
}

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

::-webkit-scrollbar-track {
    background: var(--midnight-900);
}

::-webkit-scrollbar-thumb {
    background: var(--midnight-600);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--mint-400);
}

/* === Animations === */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes scrollDown {
    0% { top: -16px; opacity: 0; }
    50% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Scroll Reveal (progressive enhancement) === */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s ease, transform 0.8s 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; }
}

/* === Navbar === */
#navbar {
    background: transparent;
    transition: background 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
}

#navbar.scrolled {
    background: rgba(5, 10, 24, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(94, 234, 212, 0.1);
}

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

/* === Gallery Items === */
.gallery-item {
    cursor: pointer;
}

/* === Mobile Menu === */
#mobileMenu {
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
    opacity: 0;
}

#mobileMenu.open {
    max-height: 500px;
    opacity: 1;
}

/* === Form Styles === */
input:focus,
select:focus,
textarea:focus {
    outline: none;
}

/* === Button Focus === */
button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--mint-400);
    outline-offset: 2px;
}

/* === Responsive Adjustments === */
@media (max-width: 768px) {
    #hero h1 {
        font-size: 2.75rem;
    }

    #hero h1 span {
        font-size: 2.5rem;
    }

    .service-card .aspect-\[4\/3\] {
        aspect-ratio: 16 / 9;
    }
}

@media (max-width: 640px) {
    #hero h1 {
        font-size: 2.25rem;
    }

    #hero h1 span {
        font-size: 2rem;
    }
}