/* Base */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    overflow-x: hidden;
}

/* Scroll-reveal (progressive enhancement — hidden by default, revealed by JS) */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    .service-card {
        opacity: 0;
        transform: translateY(40px);
        transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }
    .service-card.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    .gallery-item {
        opacity: 0;
        transform: scale(0.95);
        transition: opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }
    .gallery-item.revealed {
        opacity: 1;
        transform: scale(1);
    }
}

/* Navbar transition */
#navbar.scrolled {
    background: rgba(4, 47, 46, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #14b8a6;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #0d9488;
}

/* Selection */
::selection {
    background: #14b8a6;
    color: #fff;
}