/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }

/* ─── Animations ─── */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to   { opacity: 1; transform: translateY(0); }
}

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

.hero-anim {
    opacity: 0;
    animation: fadeInUp 0.9s ease forwards;
}
.hero-anim:nth-child(1) { animation-delay: 0.1s; }
.hero-anim:nth-child(2) { animation-delay: 0.25s; }
.hero-anim:nth-child(3) { animation-delay: 0.4s; }
.hero-anim:nth-child(4) { animation-delay: 0.55s; }

.hero-card {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

/* ─── Reveal on scroll ─── */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ─── Header scroll state ─── */
#site-header.scrolled {
    background: rgba(253, 251, 247, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}
#site-header.scrolled .font-serif { color: #0a2617 !important; }

/* ─── Mobile menu ─── */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}
#mobile-menu.close {
    opacity: 0;
    pointer-events: none;
}
.menu-line {
    transform-origin: center;
}
.menu-open .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}
.menu-open .menu-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.menu-open .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
    width: 1.5rem;
}

/* ─── Custom scrollbar ─── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #faf5ec; }
::-webkit-scrollbar-thumb { background: #1f6f41; border-radius: 9999px; }
::-webkit-scrollbar-thumb:hover { background: #2a8f54; }

/* ─── Selection ─── */
::selection { background: #c8ebd9; color: #0a2617; }