/* ── Base & Reset ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; -webkit-font-smoothing: antialiased; }

/* ── Navigation ── */
.nav-link { position: relative; }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: currentColor;
    transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }

#nav.scrolled {
    background: rgba(5, 13, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

/* ── Mobile Menu ── */
.mobile-link { transition: all 0.3s ease; }
#mobileMenu.open { opacity: 1; pointer-events: all; }
#mobileMenu.closed { opacity: 0; pointer-events: none; }
.menu-line { transition: all 0.3s ease; }
#menuBtn.active .menu-line:first-child { transform: rotate(45deg) translate(3px, 3px); }
#menuBtn.active .menu-line:last-child { transform: rotate(-45deg) translate(2px, -2px); }

/* ── Site Cards ── */
.site-card {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.06);
    padding: 0;
    transition: all 0.4s ease;
}
.site-card:hover {
    border-color: rgba(45, 212, 191, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

/* ── Form Elements ── */
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: #2dd4bf !important;
    box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.1);
}

/* ── Scroll Animations ── */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
    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; }

/* ── Custom Selection ── */
::selection { background: rgba(45, 212, 191, 0.3); color: #fff; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #0a1628; }
::-webkit-scrollbar-thumb { background: #162a4a; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #1f3d6a; }