:root {
    --charcoal-900: #1a1a2e;
    --charcoal-800: #2d2d44;
    --charcoal-700: #3d3d5c;
    --charcoal-600: #4a4a6a;
    --coral-500: #ff6b35;
    --coral-600: #e85520;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

/* Navbar scroll state */
#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(26, 26, 46, 0.08);
}

.nav-brand {
    transition: color 0.3s ease;
}

#navbar:not(.scrolled) .nav-brand {
    color: var(--charcoal-900) !important;
}

#navbar.scrolled .nav-brand {
    color: var(--charcoal-900);
}

/* Service cards */
.service-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Portfolio items */
.portfolio-item {
    cursor: pointer;
}

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

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll reveal animations (progressive enhancement) */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .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; }
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--coral-500);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--charcoal-50);
}

::-webkit-scrollbar-thumb {
    background: var(--charcoal-600);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--charcoal-700);
}