/* Base & Utilities */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

::selection {
    background-color: rgba(94, 234, 212, 0.3);
    color: #f0fdf9;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0a1628;
}
::-webkit-scrollbar-thumb {
    background: #1e2d4a;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #2a3f6a;
}

/* Hero Animations */
.hero-tag {
    animation: slideUp 0.8s ease forwards;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Service Cards */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #5eead4, transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.service-card:hover::before {
    opacity: 1;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.5);
}

/* Gallery */
.gallery-item {
    position: relative;
    overflow: hidden;
}

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(4, 9, 20, 0.4), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.gallery-item:hover::after {
    opacity: 1;
}

/* Process Steps */
.process-step::after {
    content: '';
    display: block;
    width: 40px;
    height: 1px;
    background: #1e2d4a;
    margin: 0 auto 16px;
}

/* 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 transition */
.nav-scrolled {
    background: rgba(4, 9, 20, 0.95) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(30, 45, 74, 0.5);
}

/* Mobile menu animation */
.mobile-menu-open #mobile-menu {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu-open .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.mobile-menu-open .menu-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-open .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
    width: 24px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .font-serif {
        line-height: 1.15;
    }

    #hero h1 {
        font-size: 2.75rem;
    }

    @media (max-width: 360px) {
        #hero h1 {
            font-size: 2.25rem;
        }
    }
}

/* Focus visible for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #5eead4;
    outline-offset: 2px;
}