*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg:       #000810;
    --text:     rgba(255, 255, 255, 0.88);
    --dim:      rgba(255, 255, 255, 0.38);
    --accent:   rgba(255, 170, 60, 0.75);
    --nav-h:    56px;
}

html, body {
    width: 100%; height: 100%;
    background: var(--bg);
    overflow: hidden;
    cursor: none;
}

/* ─── Canvas ─────────────────────────────── */
#main-canvas {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    z-index: 0;
}

/* ─── Nav ────────────────────────────────── */
#nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2.5rem;
    z-index: 100;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    backdrop-filter: blur(4px);
}

.nav-logo {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.05rem;
    font-weight: 300;
    letter-spacing: 0.35em;
    color: var(--text);
    background: none;
    border: none;
    cursor: none;
    transition: color 0.3s;
}
.nav-logo:hover { color: var(--accent); }

.nav-tabs {
    display: flex;
    gap: 0.25rem;
}

.tab-btn {
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.78rem;
    font-weight: 300;
    letter-spacing: 0.25em;
    color: var(--dim);
    background: none;
    border: none;
    padding: 0.4rem 0.85rem;
    cursor: none;
    transition: color 0.3s;
    position: relative;
}
.tab-btn::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%; right: 50%;
    height: 1px;
    background: var(--accent);
    transition: left 0.3s, right 0.3s;
}
.tab-btn:hover,
.tab-btn.active { color: var(--text); }
.tab-btn.active::after { left: 0.85rem; right: 0.85rem; }

/* ─── View Overlays ──────────────────────── */
.view-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    display: flex;
    align-items: center;
    pointer-events: none;   /* 항상 none — 클릭 통과 */
    z-index: 10;
    opacity: 0;
    transition: opacity 0.7s ease;
}
.view-overlay.active {
    opacity: 1;
    /* pointer-events는 none 유지: nav 클릭 보장 */
}

/* text block positions */
.vt { padding: 2rem 3rem; }
.vt.center { margin: auto; text-align: center; }
.vt.left  { margin-left: 4vw; }
.vt.right { margin-left: auto; margin-right: 4vw; text-align: right; }

/* push down below nav */
.vt { padding-top: calc(var(--nav-h) + 2rem); }

.eyebrow {
    display: block;
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.7rem;
    letter-spacing: 0.4em;
    color: var(--dim);
    margin-bottom: 1.2rem;
    text-transform: uppercase;
}

h1 {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(4.5rem, 11vw, 9rem);
    font-weight: 300;
    letter-spacing: 0.12em;
    color: var(--text);
    line-height: 1;
}

h2 {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(3rem, 7vw, 6rem);
    font-weight: 300;
    letter-spacing: 0.18em;
    color: var(--text);
    line-height: 1;
}

.ko {
    font-family: 'Noto Serif KR', serif;
    font-size: clamp(0.75rem, 1.5vw, 1rem);
    font-weight: 300;
    letter-spacing: 0.35em;
    color: var(--dim);
    margin-top: 0.6rem;
}

.num {
    display: block;
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.72rem;
    letter-spacing: 0.4em;
    color: var(--dim);
    margin-bottom: 1rem;
}

.hint {
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.75rem;
    letter-spacing: 0.25em;
    color: rgba(255, 255, 255, 0.72);
    margin-top: 1.5rem;
    text-shadow: 0 0 14px rgba(0, 0, 0, 0.9), 0 1px 3px rgba(0, 0, 0, 0.7);
    transition: opacity 2.0s ease;
    opacity: 1;
}
.hint.hint-hidden {
    opacity: 0;
    transition: opacity 0.65s ease;
}
.hint-mobile { display: none; }

.enter-hint {
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.72rem;
    letter-spacing: 0.3em;
    color: var(--dim);
    margin-top: 2.5rem;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; }
    50%       { opacity: 0.8; }
}

/* ─── Tab UI fade on interact ────────────── */
.tab-ui {
    transition: opacity 2.0s ease;
}
.tab-ui.hint-hidden {
    opacity: 0;
    transition: opacity 0.65s ease;
}

/* ─── Transit Label ──────────────────────── */
.transit-label {
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.72rem;
    letter-spacing: 0.4em;
    color: var(--accent);
    margin-top: 1.2rem;
    text-transform: uppercase;
    transition: opacity 0.5s ease;
}

/* ─── Webcam Button ──────────────────────── */
#webcam-btn {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 2rem;
    padding: 0.65rem 1.6rem;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--dim);
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.82rem;
    letter-spacing: 0.25em;
    cursor: none;
    transition: all 0.3s;
    pointer-events: auto;
}
#webcam-btn:hover {
    border-color: var(--accent);
    color: var(--text);
}
#webcam-btn.active {
    border-color: #ff6688;
    color: #ff6688;
}

.btn-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: currentColor;
    flex-shrink: 0;
}

/* ─── Hidden Webcam ──────────────────────── */
#webcam-video, #webcam-analysis {
    position: fixed;
    opacity: 0;
    pointer-events: none;
    width: 1px; height: 1px;
    top: -9999px;
}

/* ─── Contact ────────────────────────────── */
#contact-btn {
    position: fixed;
    bottom: 1.6rem;
    right: 2rem;
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.68rem;
    font-weight: 300;
    letter-spacing: 0.35em;
    color: var(--dim);
    background: none;
    border: none;
    cursor: none;
    z-index: 200;
    transition: color 0.3s;
    padding: 0.3rem 0;
}
#contact-btn::after {
    content: '';
    display: block;
    height: 1px;
    background: var(--dim);
    transition: background 0.3s;
}
#contact-btn:hover,
#contact-btn.open { color: var(--accent); }
#contact-btn.open::after { background: var(--accent); }

#contact-panel {
    position: fixed;
    bottom: 3.8rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.7rem;
    z-index: 200;
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
    transition: opacity 0.35s ease, transform 0.35s ease;
}
#contact-panel.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.contact-name {
    font-family: 'Noto Serif KR', serif;
    font-size: 0.82rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    color: var(--text);
}
.contact-item {
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.76rem;
    letter-spacing: 0.18em;
    color: var(--dim);
    text-decoration: none;
    transition: color 0.25s;
}
.contact-item:hover { color: var(--accent); }

/* ─── Custom Cursor ──────────────────────── */
#cursor-dot {
    position: fixed;
    width: 7px; height: 7px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    pointer-events: none;
    z-index: 9999;
    top: 50%; left: 50%;          /* 초기 중앙 */
    transform: translate(-50%, -50%);
    will-change: transform;
}
#cursor-ring {
    position: fixed;
    width: 30px; height: 30px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.35);
    pointer-events: none;
    z-index: 9998;
    top: 50%; left: 50%;          /* 초기 중앙 */
    transform: translate(-50%, -50%);
    will-change: transform;
}

/* ─── Loading Screen ──────────────────────── */
#loading-screen {
    position: fixed;
    inset: 0;
    background: var(--bg);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.65s ease;
}
.loading-inner { text-align: center; }
.loading-brand {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.1rem;
    letter-spacing: 0.45em;
    color: var(--text);
    margin-bottom: 2.2rem;
}
.loading-track {
    width: 180px;
    height: 1px;
    background: rgba(255,255,255,0.08);
    margin: 0 auto;
    position: relative;
}
#loading-fill {
    height: 100%;
    width: 0%;
    background: var(--accent);
    transition: width 0.4s ease;
}
.loading-sub {
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.62rem;
    letter-spacing: 0.55em;
    color: var(--dim);
    margin-top: 1.2rem;
    animation: pulse 2s ease-in-out infinite;
}

/* ─── Mobile ──────────────────────────────── */
@media (pointer: coarse) {
    html, body { cursor: auto; }
    .nav-logo, .tab-btn, #contact-btn { cursor: pointer; }
    #cursor-dot, #cursor-ring { display: none; }

    h1 { font-size: clamp(3rem, 14vw, 7rem); }
    h2 { font-size: clamp(2.2rem, 10vw, 5rem); }

    #nav { padding: 0 1.2rem; }
    .vt.left  { margin-left: 5vw; }
    .vt.right { margin-right: 5vw; }
    .vt { padding: calc(var(--nav-h) + 1.2rem) 1.2rem 1.2rem; }

    .hint-pc { display: none; }
    .hint-mobile {
        display: block;
        letter-spacing: 0.18em;
        line-height: 1.5;
        max-width: min(84vw, 440px);
    }
}