/* Base */
html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

/* Scroll reveal — progressive enhancement, only active when JS adds class */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.revealed {
    opacity: 1;
    transform: none;
}

/* Scroll-reveal with reduced-motion fallback */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.8s ease, transform 0.8s ease;
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero animations */
.hero-sub {
    opacity: 0;
    animation: fadeUp 0.8s ease 0.3s forwards;
}

.hero-title {
    opacity: 0;
    animation: fadeUp 0.8s ease 0.5s forwards;
}

.hero-desc {
    opacity: 0;
    animation: fadeUp 0.8s ease 0.7s forwards;
}

.hero-cta {
    opacity: 0;
    animation: fadeUp 0.8s ease 0.9s forwards;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll line animation */
@keyframes scrollLine {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100%); }
}

.animate-scroll-line {
    animation: scrollLine 1.5s ease-in-out infinite;
}

/* Menu link animations */
.menu-link {
    transition: opacity 0.5s ease, transform 0.5s ease !important;
}

.menu-overlay.open .menu-link:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0.1s; }
.menu-overlay.open .menu-link:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 0.2s; }
.menu-overlay.open .menu-link:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 0.3s; }
.menu-overlay.open .menu-link:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 0.4s; }

/* Navbar transition */
.nav-scrolled .nav-logo {
    color: #1A202C !important;
}

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

/* Selection */
::selection {
    background-color: #0F4C5C;
    color: #F5F0EB;
}