*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

/* Navbar scroll state */
#navbar.scrolled {
    background: rgba(9, 21, 36, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(200, 164, 90, 0.1);
}

#navbar.scrolled nav {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

/* Service card hover */
.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    transition: opacity 0.5s ease;
    background: linear-gradient(135deg, rgba(200, 164, 90, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.service-card:hover::before {
    opacity: 1;
}

/* Testimonial card hover */
#testimonials > div > div > div {
    transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

#testimonials > div > div > div:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* Mobile menu */
#mobileMenu.open {
    transform: translateX(0);
}

#mobileMenu:not(.open) {
    transform: translateX(100%);
}

/* Fade-in animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.stagger-children .fade-in:nth-child(1) { transition-delay: 0ms; }
.stagger-children .fade-in:nth-child(2) { transition-delay: 100ms; }
.stagger-children .fade-in:nth-child(3) { transition-delay: 200ms; }
.stagger-children .fade-in:nth-child(4) { transition-delay: 300ms; }
.stagger-children .fade-in:nth-child(5) { transition-delay: 400ms; }
.stagger-children .fade-in:nth-child(6) { transition-delay: 500ms; }

/* Selection color */
::selection {
    background: rgba(200, 164, 90, 0.3);
    color: #fff;
}

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

::-webkit-scrollbar-track {
    background: #091524;
}

::-webkit-scrollbar-thumb {
    background: rgba(200, 164, 90, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(200, 164, 90, 0.5);
}

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

/* Smooth image loading */
img {
    image-rendering: -webkit-optimize-contrast;
}