/* Base styles & custom properties */
:root {
    --font-sans: 'Inter', system-ui, sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Smooth scroll offset for fixed nav */
section[id] {
    scroll-margin-top: 80px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f5f3ee;
}
::-webkit-scrollbar-thumb {
    background: #c6dbb0;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #9dc17a;
}

/* Floating animations */
@keyframes float-slow {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}
@keyframes float-medium {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-7px); }
}
@keyframes float-fast {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

.animate-float-slow {
    animation: float-slow 6s ease-in-out infinite;
}
.animate-float-medium {
    animation: float-medium 4.5s ease-in-out infinite;
}
.animate-float-fast {
    animation: float-fast 3.5s ease-in-out infinite;
}

/* Navigation */
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: currentColor;
    transition: width 0.3s ease;
}
.nav-link:hover::after {
    width: 100%;
}

/* Mobile menu */
.menu-line {
    display: block;
}
body.menu-open .menu-line:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
}
body.menu-open .menu-line:nth-child(2) {
    opacity: 0;
}
body.menu-open .menu-line:nth-child(3) {
    transform: translateY(-5px) rotate(-45deg);
    width: 1.25rem;
}

/* Fade-in on scroll */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.stagger-children.visible > *:nth-child(1) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.3s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.4s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.5s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.6s; }

.stagger-children.visible > * {
    opacity: 1;
    transform: translateY(0);
}

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

/* Selection */
::selection {
    background: #c6dbb0;
    color: #1f3415;
}