/* ═══════════ CUSTOM STYLES ═══════════ */

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

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

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

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

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

/* Header scroll state */
#site-header.scrolled {
    background: rgba(253, 252, 248, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(4, 120, 87, 0.08), 0 4px 20px rgba(4, 120, 87, 0.06);
}

/* Nav link hover underline effect */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: #047857;
    border-radius: 1px;
    transition: all 0.25s ease;
    transform: translateX(-50%);
}

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

/* Scroll reveal animation */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Stagger children */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.2s; }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.3s; }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 0.4s; }

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

/* Mobile nav links */
.mobile-nav-link {
    display: block;
}

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

/* Selection color */
::selection {
    background: #A7F3D0;
    color: #064E3B;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #F5F0DC;
}

::-webkit-scrollbar-thumb {
    background: #6EE7B7;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #34D399;
}

/* Responsive tweaks */
@media (max-width: 640px) {
    .font-serif {
        font-size: clamp(2rem, 8vw, 3rem);
    }
}