/* Base & Utilities */
*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(16, 185, 129, 0.3);
    color: #fefdf8;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #040709;
}
::-webkit-scrollbar-thumb {
    background: #1e3a2f;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #10b981;
}

/* Navbar */
#navbar.scrolled {
    background: rgba(4, 7, 9, 0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(16, 185, 129, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Mobile Menu */
.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

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

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

/* Menu Button Animation */
.menu-line {
    display: block;
}

#menuBtn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}
#menuBtn.active .menu-line:nth-child(2) {
    opacity: 0;
}
#menuBtn.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
    width: 1.5rem;
}

/* 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, #10b981, transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
}

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

/* Fade-in Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* Glow effects */
.glow-emerald {
    box-shadow: 0 0 40px rgba(16, 185, 129, 0.15);
}

/* Hero image parallax-like effect */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.floating {
    animation: float 6s ease-in-out infinite;
}

/* Select dropdown fix */
select option {
    background: #0d1117;
    color: #fefdf8;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .font-serif {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }
}

/* Print styles */
@media print {
    nav, #contactForm, #formSuccess, .mobile-menu-btn {
        display: none !important;
    }
    body {
        background: white !important;
        color: black !important;
    }
}