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

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

body {
    margin: 0;
    overflow-x: hidden;
}

img, svg {
    display: block;
    max-width: 100%;
}

::selection {
    background: #bbf7d0;
    color: #0f172a;
}

/* ── Scrollbar ────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f0fdf4;
}
::-webkit-scrollbar-thumb {
    background: #9ba3d4;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #717dc0;
}

/* ── Navbar ───────────────────────────────────────────── */
#navbar {
    background: rgba(255, 255, 255, 0.0);
    backdrop-filter: blur(0px);
    transition: background 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(15, 23, 42, 0.06);
}

/* ── Service Cards ────────────────────────────────────── */
.service-card {
    will-change: transform;
}

/* ── Mobile Menu ──────────────────────────────────────── */
#mobile-menu {
    animation: slideDown 0.3s ease forwards;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Scroll Reveal (progressive enhancement) ─────────── */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(32px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    .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; }
    .reveal-delay-5 { transition-delay: 0.5s; }
    .reveal-delay-6 { transition-delay: 0.6s; }
}

/* ── Form Focus ───────────────────────────────────────── */
input:focus, select:focus, textarea:focus {
    outline: none;
}

/* ── Print ────────────────────────────────────────────── */
@media print {
    nav, #contact-form, .reveal { display: none; }
    body { color: #000; background: #fff; }
}