/* === BASE === */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

/* === NAV === */
#nav.scrolled {
    background: rgba(254, 253, 251, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(26, 23, 20, 0.08);
}

/* === MOBILE MENU === */
.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

#mobileMenu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobileMenu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
#mobileMenu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
#mobileMenu.open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
#mobileMenu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
#mobileMenu.open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* === MENU TABS === */
.tab-btn {
    background: transparent;
    color: rgba(42, 37, 34, 0.5);
    border: none;
    cursor: pointer;
    font-family: 'Inter', system-ui, sans-serif;
}

.tab-btn.active {
    background: #c4704a;
    color: #fefdfb;
    box-shadow: 0 4px 12px rgba(196, 112, 74, 0.3);
}

/* === SCROLL DOT === */
@keyframes scrollDot {
    0% { top: 0; opacity: 1; }
    100% { top: 36px; opacity: 0; }
}

.scroll-dot {
    animation: scrollDot 1.5s ease-in-out infinite;
}

/* === REVEAL ANIMATIONS === */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    html { scroll-behavior: auto; }
    .scroll-dot { animation: none; opacity: 0.5; }
    img:hover { transform: none; }
}

/* === RESPONSIVE === */
@media (max-width: 767px) {
    .font-serif {
        font-size: clamp(2.5rem, 10vw, 4rem);
    }
}