/* Base & Utilities */
html {
    scroll-behavior: smooth;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: rgba(64, 224, 208, 0.3);
    color: #ffffff;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0a2540;
}
::-webkit-scrollbar-thumb {
    background: #1e3a5f;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #2a4a6f;
}

/* Navigation */
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #40e0d0;
    transition: width 0.3s ease;
}
.nav-link:hover::after {
    width: 100%;
}

/* Mobile menu links */
.mobile-link {
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.mobile-link:last-child {
    border-bottom: none;
}

/* Floating Cards Animation */
.floating-card {
    animation: float 6s ease-in-out infinite;
}
.floating-card:nth-child(2) {
    animation-delay: -2s;
}
.floating-card:nth-child(3) {
    animation-delay: -4s;
}

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

/* Service Card Hover */
.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, #40e0d0, transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.service-card:hover::before {
    opacity: 1;
}

/* Reason Card Hover */
.reason-card {
    position: relative;
}
.reason-card:hover {
    transform: translateY(-4px);
}

/* Scroll Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Nav Background on Scroll */
nav.scrolled {
    background: rgba(10, 37, 64, 0.95);
    backdrop-blur-xl;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

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

/* Smooth image loading */
img {
    loading: lazy;
}