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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(15, 118, 110, 0.2);
    color: #0f766e;
}

/* ── Scroll Reveal (Progressive Enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .reveal-left {
        opacity: 0;
        transform: translateX(-24px);
        transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .reveal-right {
        opacity: 0;
        transform: translateX(24px);
        transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .reveal-up.revealed,
    .reveal-left.revealed,
    .reveal-right.revealed {
        opacity: 1;
        transform: translate(0, 0);
    }
}

/* ── Navbar ── */
#navbar {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

#navbar.scrolled {
    background: rgba(15, 23, 42, 0.92);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-text {
    color: rgba(255, 255, 255, 0.85) !important;
}

#navbar.scrolled .nav-text {
    color: rgba(255, 255, 255, 0.8) !important;
}

/* ── Mobile Menu ── */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

.mobile-link {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

#mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* ── Form Focus States ── */
input:focus, textarea:focus {
    outline: none;
}

/* ── Smooth Image Loading ── */
img {
    display: block;
    max-width: 100%;
}

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

::-webkit-scrollbar-track {
    background: #0f172a;
}

::-webkit-scrollbar-thumb {
    background: rgba(15, 118, 110, 0.4);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(15, 118, 110, 0.6);
}