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

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

body {
    margin: 0;
    overflow-x: hidden;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #040B18;
}
::-webkit-scrollbar-thumb {
    background: #1A3F7A;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #2552A0;
}

/* Selection */
::selection {
    background: rgba(52, 211, 153, 0.3);
    color: #fff;
}

/* Animations */
@keyframes float {
    0%, 100% { transform: rotate(45deg) translateY(0px); }
    50% { transform: rotate(45deg) translateY(-12px); }
}

@keyframes float-delayed {
    0%, 100% { transform: rotate(12deg) translateY(0px); }
    50% { transform: rotate(12deg) translateY(-8px); }
}

@keyframes pulse-slow {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.1); }
}

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

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

.animate-pulse-slow {
    animation: pulse-slow 4s ease-in-out infinite;
}

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

#navbar.scrolled {
    background: rgba(4, 11, 24, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255,255,255,0.05), 0 4px 20px rgba(0,0,0,0.3);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #34D399;
    transition: width 0.3s ease, left 0.3s ease;
    border-radius: 1px;
}

.nav-link:hover::after {
    width: 60%;
    left: 20%;
}

/* Mobile menu */
#mobile-menu {
    animation: slide-up 0.3s ease;
}

.mobile-nav-link {
    display: block;
}

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

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #34D399, #10B981);
    opacity: 0;
    transition: opacity 0.4s ease;
    border-radius: 2px 2px 0 0;
}

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

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(5) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(6) { transition-delay: 0.5s; opacity: 1; transform: translateY(0); }

/* 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;
    }
    .reveal, .reveal-stagger > * {
        opacity: 1;
        transform: none;
    }
}

/* Focus styles */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid #34D399;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Smooth transitions for all interactive elements */
button, a, input, select, textarea {
    transition: all 0.2s ease;
}

/* Select arrow override for Webkit */
select option {
    background: #0F2140;
    color: #fff;
}