/* Custom styles for Shift Up CDL Training */

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #fefdf8;
}
::-webkit-scrollbar-thumb {
    background: #166534;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #14532d;
}

/* Selection color */
::selection {
    background: #166534;
    color: #fefdf8;
}

/* Navbar transition */
#navbar {
    transition: background-color 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease;
}

/* Scroll reveal animations - progressive enhancement */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
    }
    .reveal.revealed {
        opacity: 1;
        transform: none;
    }
}

/* Mobile menu animation */
#mobile-menu {
    transition: max-height 0.3s ease, opacity 0.3s ease;
}

/* Form focus styles */
input:focus, select:focus, textarea:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(22, 101, 52, 0.15);
}

/* Button ripple effect */
button, a {
    -webkit-tap-highlight-color: transparent;
}

/* Ensure hero image doesn't shift */
#hero img {
    will-change: transform;
}

/* Subtle hover lift for cards */
.group:hover {
    transform: translateY(-2px);
}

/* Gold accent underline for serif headings */
.font-serif::after {
    content: '';
}

/* Prevent layout shift on images */
img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Custom animation for back-to-top */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}