:root {
    --bg-color: #f5f5f7; /* Apple-esque high-end neutral */
    --text-color: #000000;
    --accent-color: #ff3b00;
    --border-color: #000000;
    --meta-color: #86868b;
    --font-main: 'Inter', 'Noto Sans KR', sans-serif;
    --unit: 4px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    cursor: none;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.2;
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.02em;
    overflow-x: hidden;
}

/* Subtle Technical Grid Overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(to right, rgba(0,0,0,0.02) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0,0,0,0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: -1;
}

.noise {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("https://grainy-gradients.vercel.app/noise.svg");
    opacity: 0.04;
    pointer-events: none;
    z-index: 9999;
}

/* Precision Cursor */
.cursor {
    position: fixed;
    width: 6px;
    height: 6px;
    background: var(--accent-color);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
    transition: width 0.2s, height 0.2s, background 0.2s;
}

.cursor.active {
    width: 30px;
    height: 30px;
    background: transparent;
    border: 0.5px solid var(--text-color);
}

.site-wrapper {
    min-height: 100vh;
    padding: calc(var(--unit) * 10);
    display: flex;
    flex-direction: column;
}

/* Header: Ultra-minimal Precision */
.header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: calc(var(--unit) * 5);
    border-bottom: 0.5px solid var(--text-color);
}

.logo {
    display: flex;
    align-items: baseline;
    gap: calc(var(--unit) * 2);
}

.with-text {
    font-weight: 300;
    font-size: 16px;
    color: var(--meta-color);
}

.bold-highlight {
    font-weight: 700;
    font-size: 24px;
    letter-spacing: -0.04em;
}

.status-module {
    font-size: 9px;
    font-weight: 700;
    display: flex;
    gap: 15px;
    color: var(--meta-color);
}

.status-dot {
    width: 4px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 50%;
}

/* Main Content: Systematic & Spatial */
.content {
    flex-grow: 1;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 80px;
    padding: 100px 0;
    align-items: center;
}

.hero {
    border-left: 1px solid var(--text-color);
    padding-left: 40px;
}

.stamp {
    font-size: 10px;
    font-weight: 600;
    margin-bottom: 40px;
    text-transform: uppercase;
}

.wip-title {
    font-size: clamp(60px, 10vw, 140px);
    line-height: 0.8;
    font-weight: 900;
    letter-spacing: -0.08em;
    margin-bottom: 40px;
    text-transform: uppercase;
}

.wip-title .light {
    font-weight: 200;
    color: var(--text-color);
}

.wip-title .heavy {
    font-weight: 900;
    color: var(--text-color);
}

.statement {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.5;
    color: var(--text-color);
    max-width: 500px;
}

.statement .highlight {
    font-weight: 700;
    display: block;
    margin-bottom: 10px;
    text-transform: uppercase;
    font-size: 12px;
}

/* Action: Minimal Industrial Button */
.enter-btn {
    margin-top: 60px;
    display: inline-flex;
    padding: 12px 24px;
    background: var(--text-color);
    color: #fff;
    text-decoration: none;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.19, 1, 0.22, 1);
}

.enter-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

/* References: Technical Sidebar */
.ref-module {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ref-label {
    font-size: 9px;
    font-weight: 800;
    color: var(--meta-color);
    margin-bottom: 10px;
}

.ref-item {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-color);
    text-decoration: none;
    padding: 8px 0;
    border-bottom: 0.5px solid #e0e0e0;
    display: flex;
    justify-content: space-between;
    transition: all 0.2s;
}

.ref-item::after { content: '↗'; opacity: 0; transform: translate(-5px, 5px); transition: all 0.2s; }
.ref-item:hover { color: var(--accent-color); border-bottom-color: var(--accent-color); }
.ref-item:hover::after { opacity: 1; transform: translate(0, 0); }

/* Footer */
.footer {
    display: flex;
    justify-content: space-between;
    padding-top: 20px;
    border-top: 0.5px solid var(--text-color);
    font-size: 9px;
    font-weight: 600;
    text-transform: uppercase;
}

.footer-links a {
    color: inherit;
    text-decoration: none;
    margin-left: 20px;
}

/* Modern Mobile Optimization: Dieter Rams Contemporary */
@media (max-width: 1024px) {
    :root { --unit: 3px; }
    
    .site-wrapper { padding: 15px; overflow-x: hidden; background-attachment: fixed; }
    
    /* Header: Clearer spacing, hide top small logo in landing */
    .header { 
        padding: 10px 0 20px 0;
        border-bottom: none; 
    }
    .header .logo { display: none; }
    .status-module { width: 100%; justify-content: flex-end; }
    
    .content { 
        grid-template-columns: 1fr; 
        gap: 0; 
        padding: 20px 0 80px 0;
    }
    
    .hero { 
        padding-left: 0; 
        border-left: none;
        margin: 0;
    }
    
    .stamp { font-size: 8px; margin-bottom: 30px; opacity: 0.5; }

    /* Large Card-style Title: Minimal White Card */
    .wip-title { 
        font-size: clamp(54px, 16vw, 90px); 
        margin: 0 0 50px 0;
        letter-spacing: -0.08em;
        line-height: 0.75;
        display: block;
        width: 100%;
        background: #fff; 
        color: #000;
        padding: 60px 20px;
        margin-left: -15px;
        width: calc(100% + 30px);
        border-top: 1px solid #000;
        border-bottom: 1px solid #000;
        box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    }
    .wip-title span { display: block; }
    .wip-title .light { 
        font-size: 0.4em; 
        font-weight: 200;
        color: #888;
        margin-bottom: 15px;
        text-transform: uppercase;
        letter-spacing: 0.25em;
    }
    .wip-title .heavy {
        font-weight: 900;
        color: #000;
    }

    .statement { 
        font-size: 16px; 
        line-height: 1.6;
        border-left: 4px solid var(--accent-color);
        padding-left: 20px;
        margin: 40px 0 60px 0;
        color: #000;
    }
    .statement .highlight { 
        font-size: 14px; 
        line-height: 1.4; 
        margin-bottom: 25px;
        color: var(--accent-color);
        font-weight: 800;
    }

    .nav-module { margin-top: 20px; width: 100%; }
    .enter-btn { 
        width: 100%; 
        padding: 24px;
        font-size: 12px;
        background: var(--text-color);
        color: #fff;
        display: flex;
        justify-content: space-between;
        border-radius: 0;
        box-shadow: 0 15px 35px rgba(0,0,0,0.15);
        text-transform: uppercase;
        letter-spacing: 0.2em;
    }
    
    .ref-module { 
        margin-top: 80px; 
        display: flex;
        flex-direction: column;
        gap: 0;
    }
    
    .ref-label { padding-bottom: 15px; border-bottom: 1px solid #000; width: 100%; font-size: 10px; }
    .ref-item { 
        font-size: 12px; 
        padding: 22px 0;
        border-bottom: 0.5px solid rgba(0,0,0,0.1);
        width: 100%;
        display: flex;
        justify-content: space-between;
    }

    .footer { 
        margin-top: 80px;
        flex-direction: column; 
        gap: 40px; 
        padding-bottom: 40px;
    }
    .footer-links { width: 100%; display: flex; flex-direction: column; gap: 15px; }
    .footer-links a { margin-left: 0; padding-bottom: 10px; border-bottom: 0.5px solid #ccc; width: 100%; }

    .cursor { display: none; }
}

@media (max-width: 480px) {
    .wip-title { font-size: 54px; padding: 50px 20px; }
    .statement { font-size: 15px; }
}