/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { margin: 0; overflow-x: hidden; }
img, video { max-width: 100%; height: auto; display: block; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f8fafc; }
::-webkit-scrollbar-thumb { background: #0D7377; border-radius: 3px; }

/* ── Selection ── */
::selection { background: #0D7377; color: #fff; }

/* ── Scroll Reveal ── */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    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.visible {
    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; }

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; }
}

/* ── Navbar Transition ── */
.nav-scrolled {
    background: rgba(255, 255, 255, 0.97) !important;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

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

/* ── Image Aspect Ratios ── */
.aspect-cover { object-fit: cover; }

/* ── Focus Styles ── */
a:focus-visible, button:focus-visible {
    outline: 2px solid #0D7377;
    outline-offset: 2px;
    border-radius: 2px;
}

/* ── Smooth Image Loading ── */
img {
    background-color: #f1f5f9;
    transition: opacity 0.4s ease;
}
img.loaded {
    opacity: 1;
}
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.5s ease;
}
img[loading="lazy"].loaded {
    opacity: 1;
}