/* ─── Reset & Base ─── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(212, 160, 23, 0.3);
    color: #FDF5E6;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0A0F0D;
}
::-webkit-scrollbar-thumb {
    background: #064E3B;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #047857;
}

/* ─── Animations ─── */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation-name: fadeInUp;
    animation-duration: 0.8s;
    animation-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes scrollLine {
    0%, 100% {
        opacity: 0.6;
        transform: scaleY(1);
    }
    50% {
        opacity: 0.2;
        transform: scaleY(0.6);
        transform-origin: top;
    }
}

.animate-scroll-line {
    animation: scrollLine 1.8s ease-in-out infinite;
}

/* ─── Navigation ─── */
#main-nav {
    background: transparent;
    transition: background 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
}

#main-nav.scrolled {
    background: rgba(10, 15, 13, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(212, 160, 23, 0.1);
}

#main-nav.scrolled .nav-line {
    background: #FDF5E6;
}

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

.mobile-link {
    transition: color 0.3s ease, transform 0.3s ease;
}

.mobile-link:hover {
    transform: scale(1.05);
}

/* Hamburger animation */
#mobile-toggle.active .nav-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
#mobile-toggle.active .nav-line:nth-child(2) {
    opacity: 0;
}
#mobile-toggle.active .nav-line:nth-child(3) {
    width: 6px;
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ─── Service Cards ─── */
.service-card {
    transform-origin: center;
}

/* ─── Reveal Animations (progressive enhancement) ─── */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up,
    .reveal-left,
    .reveal-right {
        opacity: 1;
        transform: none;
    }

    /* JS will add these, but default is visible */
    .reveal-up.js-reveal,
    .reveal-left.js-reveal,
    .reveal-right.js-reveal {
        opacity: 0;
        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.js-reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }

    .reveal-left.js-reveal {
        transform: translateX(-40px);
    }
    .reveal-left.js-reveal.revealed {
        transform: translateX(0);
    }

    .reveal-right.js-reveal {
        transform: translateX(40px);
    }
    .reveal-right.js-reveal.revealed {
        transform: translateX(0);
    }
}

/* Fallback: ensure content is always visible if JS is disabled */
@media not all and (prefers-reduced-motion: no-preference) {
    .reveal-up,
    .reveal-left,
    .reveal-right {
        opacity: 1;
        transform: none;
    }
}

/* ─── Gold shimmer on hover for special elements ─── */
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

/* ─── Responsive tweaks ─── */
@media (max-width: 640px) {
    html {
        font-size: 14px;
    }
}