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

body {
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    display: block;
    max-width: 100%;
}

/* ========== SCROLL REVEAL (progressive enhancement) ========== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.7s cubic-bezier(0.22, 1, 0.36, 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; }
}

/* ========== NAVBAR SCROLL ========== */
.navbar-scrolled #navbar {
    box-shadow: 0 1px 0 rgba(148, 163, 184, 0.15);
}

/* ========== MOBILE MENU ========== */
.mobile-menu-open #mobile-menu {
    opacity: 1;
    pointer-events: auto;
}

.mobile-menu-open #bar1 {
    transform: rotate(45deg) translate(3px, 3px);
}

.mobile-menu-open #bar2 {
    opacity: 0;
}

.mobile-menu-open #bar3 {
    transform: rotate(-45deg) translate(3px, -3px);
    width: 1.25rem;
    margin-left: 0;
}

/* ========== SMOOTH SECTION TRANSITIONS ========== */
section {
    position: relative;
}

/* ========== FOCUS STYLES ========== */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
    border-radius: 2px;
}

/* ========== PRINT ========== */
@media print {
    nav, #navbar { display: none; }
    body { color: #0f172a; background: white; }
    a[href]::after { content: " (" attr(href) ")"; }
}