/* ================= Resets & Variables ================= */
        * { margin: 0; padding: 0; box-sizing: border-box; }

        :root {
            --color-black: #0a0a0a;
            --color-slate-blue: #333F48;
            --color-warm-grey: #7E7F74;
            --color-muted-brown: #A18269;
            --color-accent: #A18269;
            --color-accent-hover: #8F725A;
            --color-light-grey: #CBCBC4;
            --color-cream: #FEFEEA;
            --font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
        }

        body, html {
            width: 100%;
            font-family: var(--font-family);
            background-color: #1e272e;
            overflow-x: hidden;
            color: var(--color-cream);
            -webkit-font-smoothing: antialiased;
        }

        /* ================= Header ================= */
        .main-header {
            position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
            transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
            background: linear-gradient(150deg, rgba(30,39,46,0.96) 0%, rgba(51,63,72,0.96) 100%);
            backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 24px rgba(0,0,0,0.15);
        }
        .header-container {
            max-width: 1800px; margin: 0 auto; padding: 17px 5vw;
            display: flex; align-items: center; justify-content: space-between;
        }
        .logo { display: flex; align-items: center; justify-content: flex-start; height: 27px; z-index: 10; flex: 1; }
        .logo img { height: 100%; width: auto; filter: brightness(0) invert(1); }
        .header-right { display: flex; align-items: center; justify-content: flex-end; z-index: 10; flex: 1; }
        .nav-menu { display: flex; align-items: center; justify-content: center; gap: 48px; z-index: 5; flex: 1; }
        .nav-link {
            text-decoration: none; color: var(--color-light-grey); font-size: 13px; font-weight: 500; letter-spacing: 0.02em;
            transition: color 0.4s ease, text-shadow 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .nav-link:hover { color: var(--color-accent); text-shadow: 0.6px 0 0 var(--color-accent), -0.6px 0 0 var(--color-accent); transform: translateY(-2px); }
        .lang-switch { display: flex; align-items: center; gap: 12px; margin-right: 36px; }
        .lang-btn { background: none; border: none; color: var(--color-light-grey); font-size: 11px; font-weight: 500; letter-spacing: 0.1em; cursor: pointer; transition: color 0.3s ease; font-family: inherit; padding: 0; }
        .lang-btn:hover { color: var(--color-cream); }
        .lang-btn.active { color: var(--color-cream); font-weight: 700; }
        .lang-sep { color: rgba(203, 203, 196, 0.2); font-size: 10px; }
        .nav-cta {
            padding: 12px 28px; border-radius: 100px; border: 1px solid var(--color-accent); background: var(--color-accent);
            color: var(--color-cream); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.15em;
            text-decoration: none; position: relative; overflow: hidden; display: flex; align-items: center; justify-content: center;
            backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
            box-shadow: inset 0 1px 0 rgba(255,255,255,0.15), 0 2px 10px rgba(161,130,105,0.2);
            transition: transform 0.35s cubic-bezier(0.16,1,0.3,1), box-shadow 0.35s cubic-bezier(0.16,1,0.3,1), border-color 0.35s ease, background 0.35s ease;
        }
        .nav-cta::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; background: radial-gradient(circle 45px at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255,255,255,0.08), transparent 100%); opacity: 0; transition: opacity 0.3s ease; }
        .nav-cta:hover::before { opacity: 1; }
        .nav-cta:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); transform: translateY(-2px) scale(1.03); box-shadow: inset 0 1px 0 rgba(255,255,255,0.15), 0 8px 24px rgba(161,130,105,0.3); }
        .btn-text-wrapper { display: flex; flex-direction: column; height: 1.2em; overflow: hidden; position: relative; z-index: 2; }
        .btn-text { height: 100%; display: flex; align-items: center; justify-content: center; transition: transform 0.6s cubic-bezier(0.65, 0, 0.35, 1); white-space: nowrap; }
        .nav-cta:hover .btn-text { transform: translateY(-100%); }
        @media (max-width: 768px) { .nav-menu { display: none; } .lang-switch { display: none; } .header-container { padding: 16px 24px; } }

        /* ================= Case Hero ================= */
        .case-hero {
            position: relative; width: 100%; height: 100vh; min-height: 600px; max-height: 1100px;
            overflow: hidden; display: flex; align-items: flex-end;
        }
        .case-hero-media { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
        .case-hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(180deg, rgba(30,39,46,0.3) 0%, rgba(10,10,10,0.75) 100%); z-index: 1; }
        .case-hero-content { position: relative; z-index: 2; padding: 0 5vw 80px 5vw; max-width: 1800px; width: 100%; }
        .case-hero-category { font-size: 11px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--color-accent); margin-bottom: 20px; opacity: 0; transform: translateY(20px); animation: fadeInUp 0.62s cubic-bezier(0.22, 1, 0.36, 1) 0.3s forwards; }
        .case-hero-title { font-size: clamp(42px, 7vw, 100px); font-weight: 500; line-height: 1.02; letter-spacing: -0.03em; color: var(--color-cream); opacity: 0; transform: translateY(30px); animation: fadeInUp 0.68s cubic-bezier(0.22, 1, 0.36, 1) 0.5s forwards; }
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* ================= Back Navigation ================= */
        .case-back { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--color-warm-grey); font-size: 13px; font-weight: 500; letter-spacing: 0.04em; transition: color 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1); padding: 40px 5vw; max-width: 1800px; }
        .case-back:hover { color: var(--color-cream); transform: translateX(-4px); }
        .case-back svg { width: 16px; height: 16px; transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1); }
        .case-back:hover svg { transform: translateX(-4px); }

        /* ================= Summary ================= */
        .case-summary { padding: 80px 5vw 100px; max-width: 1800px; margin: 0 auto; }
        .case-summary-text { font-size: clamp(24px, 3vw, 42px); font-weight: 400; line-height: 1.35; letter-spacing: -0.02em; color: var(--color-cream); max-width: 900px; opacity: 0.9; }

        /* ================= Content Sections ================= */
        .case-content { max-width: 1800px; margin: 0 auto; padding: 0 5vw; }
        .case-text-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; padding: 60px 0; border-top: 1px solid rgba(255, 255, 255, 0.06); }
        .case-section-label { font-size: 10px; font-weight: 600; letter-spacing: 0.25em; text-transform: uppercase; color: var(--color-accent); margin-bottom: 24px; }
        .case-section-text { font-size: 17px; font-weight: 400; line-height: 1.7; color: var(--color-light-grey); max-width: 560px; }
        .case-text-single { padding: 60px 0; border-top: 1px solid rgba(255, 255, 255, 0.06); max-width: 700px; }

        /* ================= Image Sections ================= */
        .case-image-full { width: 100%; margin: 40px 0; overflow: hidden; }
        .case-image-full img { width: 100%; height: auto; display: block; object-fit: cover; }
        .case-image-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin: 40px 0; }
        .case-image-grid img { width: 100%; height: 100%; object-fit: cover; display: block; }
        .case-image-contained { max-width: 1800px; margin: 60px auto; padding: 0 5vw; }
        .case-image-contained img { width: 100%; height: auto; display: block; }
        .case-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin: 40px 0; }
        .case-gallery img { width: 100%; height: auto; object-fit: cover; display: block; }
        .case-gallery .full-span { grid-column: 1 / -1; }

        /* ================= Fade-in ================= */
        .fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.62s cubic-bezier(0.22, 1, 0.36, 1), transform 0.62s cubic-bezier(0.22, 1, 0.36, 1); }
        .fade-in.visible { opacity: 1; transform: translateY(0); }

        /* ================= Responsive ================= */
        @media (max-width: 900px) {
            .case-text-grid { grid-template-columns: 1fr; gap: 48px; }
            .case-image-grid, .case-gallery { grid-template-columns: 1fr; }
            .case-hero { height: 70vh; min-height: 450px; }
            .case-hero-content { padding-bottom: 50px; }
            .case-summary { padding: 50px 5vw 60px; }
        }

        /* ================= Footer ================= */
        .site-footer { width: 100%; max-width: 100%; background: var(--color-slate-blue); }
        .footer-bar { width: 100%; max-width: 1800px; margin: 0 auto; padding: 40px 5vw; display: flex; justify-content: space-between; align-items: center; }
        .footer-logo { display: inline-flex; align-items: center; }
        .footer-logo img { height: 31px; width: auto; opacity: 0.6; transition: opacity 0.4s ease; }
        .footer-logo:hover img { opacity: 1; }
        .footer-nav { display: flex; align-items: center; gap: 36px; }
        .footer-link { font-size: 13px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-warm-grey); text-decoration: none; position: relative; padding: 4px 0; transition: color 0.4s ease; }
        .footer-link::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 1px; background: var(--color-accent); transform: scaleX(0); transform-origin: left; transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1); }
        .footer-link:hover { color: var(--color-cream); }
        .footer-link:hover::after { transform: scaleX(1); }
        .footer-top-btn { font-size: 19px; color: var(--color-warm-grey); background: none; border: none; cursor: pointer; padding: 4px 0; line-height: 1; font-family: var(--font-family); transition: color 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1); }
        .footer-top-btn:hover { color: var(--color-cream); transform: translateY(-3px); }

/* Mobile stability patch (non-destructive) */
@media (max-width: 768px) {
    .header-container {
        padding: 16px 16px;
    }
    .main-header.scrolled .header-container {
        padding: 12px 16px;
    }
    .logo {
        flex: 0 0 auto;
        height: 24px;
    }
    .header-right {
        flex: 0 0 auto;
    }
    .nav-cta {
        padding: 10px 14px;
        font-size: 10px;
        letter-spacing: 0.1em;
        max-width: 46vw;
        white-space: nowrap;
    }

    .footer-bar {
        padding: 24px 5vw;
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    .footer-nav {
        width: 100%;
        gap: 14px;
        flex-wrap: wrap;
        justify-content: flex-start;
    }
    .footer-link {
        font-size: 11px;
        letter-spacing: 0.08em;
    }
}