/* ─── BASE ─── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; -webkit-font-smoothing: antialiased; }

/* ─── NAV SCROLL STATE ─── */
#site-header.scrolled {
    background: rgba(244, 251, 248, 0.92);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(8, 30, 55, 0.08);
}

/* ─── NAV LINKS ─── */
.nav-link { position: relative; }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #3a9e88;
    border-radius: 1px;
    transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }

/* ─── MOBILE MENU ─── */
#mobile-menu.open {
    transform: translateY(0) !important;
    opacity: 1 !important;
    pointer-events: all !important;
}
#mobile-menu.closed {
    transform: translateY(-100%) !important;
    opacity: 0 !important;
    pointer-events: none !important;
}
.hamburger-line { transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
body.menu-open .hamburger-line:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); top: 50%; }
body.menu-open .hamburger-line:nth-child(2) { opacity: 0; }
body.menu-open .hamburger-line:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); top: 50%; }

/* ─── HERO BLOBS ─── */
.hero-blob { will-change: transform; }
.blob-1 { animation: float-slow 8s ease-in-out infinite; }
.blob-2 { animation: float-slow 10s ease-in-out infinite reverse; }
.blob-3 { animation: float-slow 12s ease-in-out infinite; }

@keyframes float-slow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(20px, -20px) scale(1.05); }
    66% { transform: translate(-10px, 15px) scale(0.97); }
}

/* ─── FLOATING CARD ─── */
.animate-float {
    animation: float-card 4s ease-in-out infinite;
}
@keyframes float-card {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ─── SCROLL INDICATOR ─── */
.scroll-dot { animation: scroll-dot-anim 1.8s ease-in-out infinite; }
@keyframes scroll-dot-anim {
    0% { top: -12px; opacity: 1; }
    100% { top: 44px; opacity: 0; }
}

/* ─── SERVICE CARDS ─── */
.service-card {
    will-change: transform, box-shadow;
}

/* ─── SCROLL REVEAL (progressive enhancement) ─── */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 1;
        transform: translateY(0);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal.revealed {
        opacity: 0;
        transform: translateY(30px);
    }
}
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}
</style>

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f4fbf8; }
::-webkit-scrollbar-thumb { background: #95d5c4; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #3a9e88; }

/* ─── SELECTION ─── */
::selection { background: #c5eade; color: #081e6e; }