/* Base & Reset */
*, *::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;
}

/* Selection Color */
::selection {
    background: rgba(255, 107, 53, 0.3);
    color: #fff;
}

/* Smooth Scroll Offset for Fixed Nav */
section[id] {
    scroll-margin-top: 80px;
}

/* Navbar Scroll State */
#navbar.scrolled {
    background: rgba(15, 20, 25, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Service Card Hover */
.service-card {
    will-change: transform;
}

/* Process Step Hover */
.process-step {
    transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.process-step:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* Mobile Nav Links */
.mobile-nav-link {
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-nav-link:last-child {
    border-bottom: none;
}

/* Scroll Reveal Animations */
.reveal {
    opacity: 1;
    transform: translateY(0);
    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);
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
    }
    
    .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; }
}

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

::-webkit-scrollbar-track {
    background: #1a2029;
}

::-webkit-scrollbar-thumb {
    background: #374151;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #4b5563;
}

/* Focus Styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #ff6b35;
    outline-offset: 2px;
}

/* Image Placeholder Fallback */
img {
    background: linear-gradient(135deg, #252d38 0%, #1a2029 100%);
}