/* Base styles and custom utilities */
html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

/* Scroll reveal animations — progressive enhancement only */
.scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal {
        opacity: 0;
        transform: translateY(24px);
    }

    .scroll-reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Navbar scroll state */
#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

/* Mobile menu transitions */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

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

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

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

/* Selection color */
::selection {
    background: #99f6e4;
    color: #134e4a;
}

/* Smooth image loading */
img {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* Focus styles */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Hero parallax-like subtle movement */
@media (prefers-reduced-motion: no-preference) {
    .hero-bg-blob {
        animation: float 8s ease-in-out infinite;
    }

    @keyframes float {
        0%, 100% { transform: translateY(0px) scale(1); }
        50% { transform: translateY(-20px) scale(1.05); }
    }
}

/* Button hover glow effect */
.btn-glow:hover {
    box-shadow: 0 0 30px rgba(13, 148, 136, 0.3);
}

/* Card hover lift */
.card-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-lift:hover {
    transform: translateY(-4px);
}