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

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

/* Scroll Reveal — progressive enhancement, hidden by default */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.scroll-reveal.revealed:nth-child(2) { transition-delay: 0.1s; }
.scroll-reveal.revealed:nth-child(3) { transition-delay: 0.2s; }

/* Feature items stagger */
.feature-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.feature-item.revealed {
    opacity: 1;
    transform: translateY(0);
}

.feature-item.revealed:nth-child(1) { transition-delay: 0.05s; }
.feature-item.revealed:nth-child(2) { transition-delay: 0.1s; }
.feature-item.revealed:nth-child(3) { transition-delay: 0.15s; }
.feature-item.revealed:nth-child(4) { transition-delay: 0.2s; }

/* Navbar scroll state */
#navbar.scrolled {
    background: rgba(250, 250, 248, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

#navbar.scrolled .font-serif,
#navbar.scrolled a:not(.bg-coral-500) {
    color: #1A1D23 !important;
}

/* Mobile menu transitions */
#mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
}

#mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
}

/* Hamburger animation */
#mobile-toggle.active #bar1 {
    transform: translateY(6px) rotate(45deg);
}

#mobile-toggle.active #bar2 {
    opacity: 0;
}

#mobile-toggle.active #bar3 {
    transform: translateY(-6px) rotate(-45deg);
    width: 1.5rem;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .scroll-reveal,
    .feature-item {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* Selection color */
::selection {
    background: #FFC9BC;
    color: #1A1D23;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #FAFAF8;
}
::-webkit-scrollbar-thumb {
    background: #E5E5E0;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #D4D4CE;
}