/* Base & Typography */
html {
    scroll-behavior: smooth;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

/* Service card hover lift */
.service-card {
    transform: translateY(0);
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), box-shadow 0.4s ease;
}
.service-card:hover {
    transform: translateY(-4px);
}

/* Navbar scroll state */
nav.scrolled {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06), 0 4px 20px rgba(0, 0, 0, 0.04);
}

/* Mobile menu transitions */
#mobile-menu.open {
    opacity: 1 !important;
    pointer-events: all !important;
}

/* Hamburger animation */
.hamburger-line {
    display: block;
    transition: transform 0.3s ease, opacity 0.3s ease;
}
#mobile-toggle.active .hamburger-line:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}
#mobile-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}
#mobile-toggle.active .hamburger-line:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
    width: 1.5rem;
}

/* Mobile link transitions */
.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}
#mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}
#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }

/* Scroll reveal (below fold only) */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.7s 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(24px);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Input focus styles */
input:focus, textarea:focus {
    outline: none;
}

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