/* Base styles and custom properties */
:root {
    --color-midnight-900: #050a14;
    --color-midnight-800: #0a1628;
    --color-midnight-700: #0f2240;
    --color-mint-400: #4dd9b8;
    --color-mint-500: #2bc4a4;
    --color-gold-400: #d4af59;
    --color-gold-500: #c9a227;
}

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

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

::-webkit-scrollbar-track {
    background: var(--color-midnight-900);
}

::-webkit-scrollbar-thumb {
    background: var(--color-midnight-700);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gold-400);
}

/* Selection color */
::selection {
    background: rgba(212, 175, 89, 0.3);
    color: #ffffff;
}

/* Reveal animations - progressive enhancement */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
                    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    
    /* Stagger children */
    .reveal-grid > * {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), 
                    transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .reveal-grid.revealed > *:nth-child(1) { transition-delay: 0.05s; }
    .reveal-grid.revealed > *:nth-child(2) { transition-delay: 0.1s; }
    .reveal-grid.revealed > *:nth-child(3) { transition-delay: 0.15s; }
    .reveal-grid.revealed > *:nth-child(4) { transition-delay: 0.2s; }
    .reveal-grid.revealed > *:nth-child(5) { transition-delay: 0.25s; }
    .reveal-grid.revealed > *:nth-child(6) { transition-delay: 0.3s; }
    
    .reveal-grid.revealed > * {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Service card hover effects */
.service-card {
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
                border-color 0.5s ease,
                box-shadow 0.5s ease;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* Mobile menu transitions */
.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

.mobile-menu-open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu-open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu-open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu-open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu-open .mobile-link:nth-child(4) { transition-delay: 0.25s; }

/* Navbar styles */
.navbar-scrolled {
    background: rgba(5, 10, 20, 0.95) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(212, 175, 89, 0.1);
}

/* Focus styles for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-gold-400);
    outline-offset: 2px;
}

/* Image loading placeholder */
img {
    background: linear-gradient(135deg, var(--color-midnight-800) 0%, var(--color-midnight-700) 100%);
}

/* Gold shimmer animation for special elements */
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

/* Subtle pulse for decorative elements */
@keyframes subtle-pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* Form input autofill styling */
input:-webkit-autofill,
textarea:-webkit-autofill {
    -webkit-box-shadow: 0 0 0 30px var(--color-midnight-800) inset !important;
    -webkit-text-fill-color: #ffffff !important;
}

/* Ensure text is readable on all backgrounds */
@media (prefers-contrast: high) {
    .service-card {
        border-color: rgba(255, 255, 255, 0.2);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .reveal,
    .reveal-grid > * {
        opacity: 1;
        transform: none;
    }
}

/* Tablet and up adjustments */
@media (min-width: 768px) {
    .service-card:hover {
        border-color: rgba(212, 175, 89, 0.3);
    }
}

/* Large screens */
@media (min-width: 1024px) {
    .service-card:hover {
        border-color: rgba(77, 217, 184, 0.3);
    }
}