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

body {
    overflow-x: hidden;
}

::selection {
    background-color: rgba(13, 148, 136, 0.3);
    color: #f1f5f9;
}

/* Scroll reveal — progressive enhancement, only applied via JS */
@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);
    }
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
}

/* Service cards */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(20, 184, 166, 0.5), transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.service-card:hover::before {
    opacity: 1;
}

/* Gallery hover */
.gallery-item {
    position: relative;
}

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(4, 47, 46, 0.4), transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.gallery-item:hover::after {
    opacity: 1;
}

/* FAQ */
.faq-item {
    transition: border-color 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(20, 184, 166, 0.3);
}

.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
}

.faq-content.open {
    max-height: 200px;
}

/* Navbar scroll state */
.navbar-scrolled {
    background: rgba(8, 13, 24, 0.95) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(100, 116, 139, 0.1);
}

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

::-webkit-scrollbar-track {
    background: #080d18;
}

::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0d9488;
}

/* Focus visible */
*:focus-visible {
    outline: 2px solid #14b8a6;
    outline-offset: 2px;
}