/* ===== BASE & RESET ===== */
    *, *::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 {
        display: block;
        max-width: 100%;
    }

    ::selection {
        background: #8B1A1A;
        color: #fff;
    }

    /* ===== SCROLLBAR ===== */
    ::-webkit-scrollbar {
        width: 6px;
    }
    ::-webkit-scrollbar-track {
        background: #FAF7F5;
    }
    ::-webkit-scrollbar-thumb {
        background: #d4a0a0;
        border-radius: 3px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #8B1A1A;
    }

    /* ===== NAVIGATION ===== */
    #nav {
        background: transparent;
        transition: background 0.4s ease, box-shadow 0.4s ease;
    }

    #nav.scrolled {
        background: rgba(250, 247, 245, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        box-shadow: 0 1px 0 rgba(0,0,0,0.05);
    }

    .nav-link {
        position: relative;
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: -4px;
        left: 0;
        width: 0;
        height: 1px;
        background: #8B1A1A;
        transition: width 0.3s ease;
    }

    .nav-link:hover::after {
        width: 100%;
    }

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

    .mobile-nav-link {
        opacity: 0;
        transform: translateY(10px);
        transition: opacity 0.3s ease, transform 0.3s ease;
    }

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

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

    /* Menu icon animation */
    #menu-btn.active .menu-line:nth-child(1) {
        top: 8px;
        transform: rotate(45deg);
    }
    #menu-btn.active .menu-line:nth-child(2) {
        opacity: 0;
    }
    #menu-btn.active .menu-line:nth-child(3) {
        top: 8px;
        transform: rotate(-45deg);
    }

    /* ===== HERO ===== */
    .reveal-hero {
        opacity: 1;
        transform: translateY(0);
        transition: opacity 0.8s ease, transform 0.8s ease;
    }

    .reveal-hero:nth-child(1) { transition-delay: 0.1s; }
    .reveal-hero:nth-child(2) { transition-delay: 0.25s; }
    .reveal-hero:nth-child(3) { transition-delay: 0.4s; }
    .reveal-hero:nth-child(4) { transition-delay: 0.55s; }

    @keyframes scroll-line {
        0% { transform: scaleY(0); transform-origin: top; opacity: 1; }
        50% { transform: scaleY(1); transform-origin: top; opacity: 1; }
        51% { transform-origin: bottom; }
        100% { transform: scaleY(0); transform-origin: bottom; opacity: 1; }
    }

    .animate-scroll-line {
        animation: scroll-line 2s ease-in-out infinite;
    }

    /* ===== SCROLL REVEAL ===== */
    .reveal {
        opacity: 1;
        transform: translateY(0);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }

    /* Default state (no JS) is visible — progressive enhancement via JS */
    .js-active .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .js-active .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }

    /* Stagger children */
    .js-active .service-card {
        transition-delay: calc(var(--i, 0) * 0.1s);
    }

    .js-active .gallery-item {
        transition-delay: calc(var(--i, 0) * 0.08s);
    }

    .js-active .testimonial-card {
        transition-delay: calc(var(--i, 0) * 0.12s);
    }

    /* ===== SERVICE CARDS ===== */
    .service-card {
        transition: transform 0.5s ease, box-shadow 0.5s ease, border-color 0.5s ease;
    }

    /* ===== GALLERY ===== */
    .gallery-item {
        transition: transform 0.5s ease, box-shadow 0.5s ease;
    }

    .gallery-item:hover {
        box-shadow: 0 20px 60px rgba(139, 26, 26, 0.15);
    }

    /* ===== BACK TO TOP ===== */
    #back-to-top.visible {
        opacity: 1;
        pointer-events: all;
    }

    /* ===== RESPONSIVE ===== */
    @media (max-width: 767px) {
        .reveal-hero:nth-child(1) { transition-delay: 0.05s; }
        .reveal-hero:nth-child(2) { transition-delay: 0.15s; }
        .reveal-hero:nth-child(3) { transition-delay: 0.25s; }
        .reveal-hero:nth-child(4) { transition-delay: 0.35s; }
    }

    /* ===== 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; }
        .js-active .reveal {
            opacity: 1;
            transform: none;
        }
    }