/* ── Reset & Base ── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

img {
    display: block;
}

a {
    text-decoration: none;
}

/* ── Navigation ── */
#nav {
    background: rgba(245, 243, 239, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

#nav.scrolled {
    background: rgba(245, 243, 239, 0.97);
    box-shadow: 0 1px 0 rgba(148, 163, 184, 0.15);
}

/* ── Mobile Menu ── */
#mobileMenu {
    background: rgba(245, 243, 239, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

#mobileMenu.open {
    opacity: 1;
    pointer-events: all;
}

.mobile-link {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

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

#mobileMenu.open .mobile-link:nth-child(1) { transition-delay: 0.08s; }
#mobileMenu.open .mobile-link:nth-child(2) { transition-delay: 0.16s; }
#mobileMenu.open .mobile-link:nth-child(3) { transition-delay: 0.24s; }
#mobileMenu.open .mobile-link:nth-child(4) { transition-delay: 0.32s; }
#mobileMenu.open .mobile-link:nth-child(5) { transition-delay: 0.40s; }

/* ── Menu Button ── */
#menuBtn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#menuBtn.active .menu-line:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

#menuBtn.active .menu-line:nth-child(2) {
    transform: translateY(-4px) rotate(-45deg);
    opacity: 0;
}

/* ── Scroll Reveal ── */
.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);
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(28px);
    }
}

/* ── Staggered children ── */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.08s; }
.reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.16s; }
.reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.24s; }
.reveal-stagger.revealed > *:nth-child(5) { transition-delay: 0.32s; }

@media (prefers-reduced-motion: no-preference) {
    .reveal-stagger > * {
        opacity: 0;
        transform: translateY(16px);
    }
}

/* ── Thin scrollbar ── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #f5f3ef;
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}