/* Custom styles for Sutherland Freight LLC */

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f0f4f8;
}

::-webkit-scrollbar-thumb {
    background: #102a43;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #243b53;
}

/* Selection color */
::selection {
    background: #fbbf24;
    color: #102a43;
}

/* Fade-in animation for scroll-reveal elements */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Stagger children animations */
.stagger-children .fade-in:nth-child(1) { transition-delay: 0.1s; }
.stagger-children .fade-in:nth-child(2) { transition-delay: 0.2s; }
.stagger-children .fade-in:nth-child(3) { transition-delay: 0.3s; }
.stagger-children .fade-in:nth-child(4) { transition-delay: 0.4s; }
.stagger-children .fade-in:nth-child(5) { transition-delay: 0.5s; }
.stagger-children .fade-in:nth-child(6) { transition-delay: 0.6s; }

/* Reduce motion preference */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    .fade-in {
        opacity: 1;
        transform: none;
    }
}

/* Navbar scroll effect */
.navbar-scrolled {
    box-shadow: 0 4px 20px rgba(16, 42, 67, 0.1);
}

/* Hover lift effect for cards */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(16, 42, 67, 0.15);
}

/* Button focus states */
button:focus-visible,
a:focus-visible {
    outline: 3px solid #fbbf24;
    outline-offset: 2px;
    border-radius: 4px;
}

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

/* Mobile menu animation */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

#mobile-menu.open {
    max-height: 400px;
}

/* Image loading placeholder */
img {
    background: linear-gradient(90deg, #f0f4f8 25%, #d9e2ec 50%, #f0f4f8 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

img[src] {
    animation: none;
    background: none;
}

/* Gold accent underline animation */
.gold-underline {
    position: relative;
    display: inline-block;
}

.gold-underline::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 3px;
    background: #fbbf24;
    transition: width 0.3s ease;
    border-radius: 2px;
}

.gold-underline:hover::after {
    width: 100%;
}