/* ===== BASE & RESET ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 80px; }
body { margin: 0; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
img, video { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
select, input, textarea { font-family: inherit; font-size: inherit; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #0c203c; }
::-webkit-scrollbar-thumb { background: #d49a1e40; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #d49a1e70; }

/* ===== GOLD LINE ===== */
.gold-line {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, #d49a1e, #f4dfa8);
    margin: 0 auto 1.5rem;
    border-radius: 2px;
}

/* ===== REVEAL ANIMATIONS ===== */
/* Default: visible (progressive enhancement — content shows even without JS) */
.reveal {
    opacity: 1;
    transform: none;
    transition: none;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        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; }
}

/* ===== NAV SCROLLED STATE ===== */
#nav.scrolled {
    background: rgba(7, 20, 38, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}
#nav.scrolled #nav-links a { color: rgba(255,255,255,0.8); }

/* ===== MOBILE MENU ===== */
#mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
}
#mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
}
#menu-btn[aria-expanded="true"] #bar1 {
    transform: translateY(6px) rotate(45deg);
}
#menu-btn[aria-expanded="true"] #bar2 {
    opacity: 0;
    transform: scaleX(0);
}
#menu-btn[aria-expanded="true"] #bar3 {
    transform: translateY(-6px) rotate(-45deg);
    width: 1.25rem;
}

/* ===== SERVICE CARD GLOW ===== */
.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, rgba(212,154,30,0.3), transparent 60%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}
.service-card:hover::before { opacity: 1; }

/* ===== SELECTION ===== */
::selection {
    background: rgba(212, 154, 30, 0.3);
    color: #f0f4f9;
}

/* ===== FOCUS VISIBLE ===== */
:focus-visible {
    outline: 2px solid #d49a1e;
    outline-offset: 2px;
    border-radius: 4px;
}