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

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

body {
    overflow-x: hidden;
}

/* Selection */
::selection {
    background: rgba(52, 212, 168, 0.3);
    color: #fff;
}

/* Grid overlay for hero */
#gridOverlay {
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 80px 80px;
}

/* Navigation scroll state */
.nav-scrolled {
    background: rgba(5, 13, 26, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #34d4a8;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link:hover {
    color: #34d4a8 !important;
}

/* Mobile menu */
#mobileMenu.open {
    opacity: 1 !important;
    pointer-events: all !important;
}

#mobileMenu.open .mobile-link {
    animation: fadeUp 0.4s ease forwards;
    opacity: 0;
}

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

/* Hamburger animation */
#menuBtn.active #line1 {
    transform: translateY(4px) rotate(45deg);
}

#menuBtn.active #line2 {
    opacity: 0;
}

#menuBtn.active #line3 {
    transform: translateY(-4px) rotate(-45deg);
}

/* Float animations */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes float-delayed {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

@keyframes float-slow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(20px, -20px) scale(1.05); }
}

@keyframes float-medium {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-15px, 15px) scale(1.03); }
}

@keyframes scroll-line {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

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

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

.animate-float-delayed {
    animation: float-delayed 5s ease-in-out infinite;
    animation-delay: 1s;
}

.animate-float-slow {
    animation: float-slow 12s ease-in-out infinite;
}

.animate-float-medium {
    animation: float-medium 9s ease-in-out infinite;
}

.animate-scroll-line {
    animation: scroll-line 2s ease-in-out infinite;
}

/* Service card hover */
.service-card {
    position: relative;
}

.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(52,212,168,0.05) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.5s ease;
}

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

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    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; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #0a1628;
}

::-webkit-scrollbar-thumb {
    background: rgba(52, 212, 168, 0.3);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(52, 212, 168, 0.5);
}

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

/* Smooth transitions for all interactive elements */
a, button {
    transition: all 0.3s ease;
}

/* Reduce motion for accessibility */
@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;
    }
}