/* Base & Typography */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f5f5f4;
}
::-webkit-scrollbar-thumb {
    background: #0F766E;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #0d5f59;
}

/* Header styles */
#site-header {
    background: rgba(250, 250, 249, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

#site-header.scrolled {
    background: rgba(250, 250, 249, 0.95);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

/* Nav link underline animation */
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #0F766E;
    transition: width 0.3s ease;
}
.nav-link:hover::after {
    width: 100%;
}

/* Mobile menu */
#mobile-menu {
    background: rgba(250, 250, 249, 0.98);
    backdrop-filter: blur(20px);
}

/* Scroll reveal animations */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.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; }

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
    }
    .reveal.visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Counter animation */
.counter {
    display: inline-block;
}

/* Selection color */
::selection {
    background: #0F766E;
    color: white;
}

/* Image loading placeholder */
img {
    background-color: #e7e5e4;
}

/* Smooth card hover */
.group {
    will-change: transform;
}

/* Subtle float animation for hero cards */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

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

.floating-card-1 {
    animation: float 4s ease-in-out infinite;
}
.floating-card-2 {
    animation: float-reverse 5s ease-in-out infinite;
}

/* Decorative grain overlay */
.grain::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    z-index: 9999;
}