:root {
    --bg-void: #0A0A0F;
    --bg-surface: #14141F;
    --bg-elevated: #1E1E2D;
    --text-primary: #D4C8B0;
    --text-secondary: #8A7F6E;
    --accent-gold: #C9A84C;
    --accent-teal: #3D8B8B;
    --accent-deep-teal: #1A5C5C;
    --accent-copper: #B86B5A;
    --accent-crimson: #9B3B3B;
    --divider-gold: #5C5232;
    --gradient-deco: linear-gradient(135deg, #C9A84C 0%, #3D8B8B 50%, #1A5C5C 100%);
    --ease-deco: cubic-bezier(0.25, 0.1, 0.25, 1.0);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    background-color: var(--bg-void);
    color: var(--text-primary);
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: clamp(1rem, 1.2vw, 1.25rem);
    line-height: 1.7;
    letter-spacing: 0.02em;
    overflow-x: hidden;
}

/* ===================== NAVIGATION ===================== */

#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--divider-gold);
    transform: translateY(0);
    transition: transform 0.5s var(--ease-deco), opacity 0.5s var(--ease-deco);
}

#main-nav.nav-hidden {
    transform: translateY(-100%);
    opacity: 0;
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.75rem 2rem;
}

.nav-ornament-left,
.nav-ornament-right {
    width: 30px;
    height: 30px;
    position: relative;
}

.nav-ornament-left::before,
.nav-ornament-right::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 1px solid var(--divider-gold);
    transform: rotate(45deg);
}

.nav-ornament-left::before {
    top: 7px;
    left: 0;
}

.nav-ornament-right::before {
    top: 7px;
    right: 0;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--accent-gold);
}

.nav-title {
    font-family: 'Poiret One', cursive;
    font-size: 1.2rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--accent-gold);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.4s var(--ease-deco);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--gradient-deco);
    transition: width 0.4s var(--ease-deco);
}

.nav-link:hover {
    color: var(--accent-gold);
}

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

.scroll-progress {
    height: 2px;
    width: 0%;
    background: var(--gradient-deco);
    transition: width 0.1s linear;
}

/* ===================== HERO ===================== */

.act-hero {
    position: relative;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-void);
    overflow: hidden;
}

.sunburst-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 150vmax;
    height: 150vmax;
    transform: translate(-50%, -50%);
    background: conic-gradient(
        from 0deg,
        #C9A84C 0deg, transparent 2deg,
        transparent 10deg, #C9A84C 10deg,
        #C9A84C 12deg, transparent 12deg,
        transparent 20deg, #C9A84C 20deg,
        #C9A84C 22deg, transparent 22deg,
        transparent 30deg, #C9A84C 30deg,
        #C9A84C 32deg, transparent 32deg,
        transparent 40deg, #C9A84C 40deg,
        #C9A84C 42deg, transparent 42deg,
        transparent 50deg, #C9A84C 50deg,
        #C9A84C 52deg, transparent 52deg,
        transparent 60deg, #C9A84C 60deg,
        #C9A84C 62deg, transparent 62deg,
        transparent 70deg, #C9A84C 70deg,
        #C9A84C 72deg, transparent 72deg,
        transparent 80deg, #C9A84C 80deg,
        #C9A84C 82deg, transparent 82deg,
        transparent 90deg, #C9A84C 90deg,
        #C9A84C 92deg, transparent 92deg,
        transparent 100deg, #C9A84C 100deg,
        #C9A84C 102deg, transparent 102deg,
        transparent 110deg, #C9A84C 110deg,
        #C9A84C 112deg, transparent 112deg,
        transparent 120deg, #C9A84C 120deg,
        #C9A84C 122deg, transparent 122deg,
        transparent 130deg, #C9A84C 130deg,
        #C9A84C 132deg, transparent 132deg,
        transparent 140deg, #C9A84C 140deg,
        #C9A84C 142deg, transparent 142deg,
        transparent 150deg, #C9A84C 150deg,
        #C9A84C 152deg, transparent 152deg,
        transparent 160deg, #C9A84C 160deg,
        #C9A84C 162deg, transparent 162deg,
        transparent 170deg, #C9A84C 170deg,
        #C9A84C 172deg, transparent 172deg,
        transparent 180deg, #C9A84C 180deg,
        #C9A84C 182deg, transparent 182deg,
        transparent 190deg, #C9A84C 190deg,
        #C9A84C 192deg, transparent 192deg,
        transparent 200deg, #C9A84C 200deg,
        #C9A84C 202deg, transparent 202deg,
        transparent 210deg, #C9A84C 210deg,
        #C9A84C 212deg, transparent 212deg,
        transparent 220deg, #C9A84C 220deg,
        #C9A84C 222deg, transparent 222deg,
        transparent 230deg, #C9A84C 230deg,
        #C9A84C 232deg, transparent 232deg,
        transparent 240deg, #C9A84C 240deg,
        #C9A84C 242deg, transparent 242deg,
        transparent 250deg, #C9A84C 250deg,
        #C9A84C 252deg, transparent 252deg,
        transparent 260deg, #C9A84C 260deg,
        #C9A84C 262deg, transparent 262deg,
        transparent 270deg, #C9A84C 270deg,
        #C9A84C 272deg, transparent 272deg,
        transparent 280deg, #C9A84C 280deg,
        #C9A84C 282deg, transparent 282deg,
        transparent 290deg, #C9A84C 290deg,
        #C9A84C 292deg, transparent 292deg,
        transparent 300deg, #C9A84C 300deg,
        #C9A84C 302deg, transparent 302deg,
        transparent 310deg, #C9A84C 310deg,
        #C9A84C 312deg, transparent 312deg,
        transparent 320deg, #C9A84C 320deg,
        #C9A84C 322deg, transparent 322deg,
        transparent 330deg, #C9A84C 330deg,
        #C9A84C 332deg, transparent 332deg,
        transparent 340deg, #C9A84C 340deg,
        #C9A84C 342deg, transparent 342deg,
        transparent 350deg, #C9A84C 350deg,
        #C9A84C 352deg, transparent 352deg,
        transparent 360deg
    );
    opacity: 0.04;
    pointer-events: none;
    animation: sunburstRotate 120s linear infinite;
}

.sunburst-faint {
    opacity: 0.02;
}

@keyframes sunburstRotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    animation: heroBreathing 8s ease-in-out infinite;
}

@keyframes heroBreathing {
    0%, 100% { opacity: 0.85; }
    50% { opacity: 1; }
}

.hero-hangul {
    font-family: 'Noto Serif KR', serif;
    font-weight: 700;
    font-size: clamp(30vh, 50vw, 80vh);
    line-height: 0.85;
    background: var(--gradient-deco);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 60px rgba(201, 168, 76, 0.15));
}

.hero-latin {
    font-family: 'Poiret One', cursive;
    font-size: clamp(2rem, 5vw, 4rem);
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--accent-gold);
    margin-top: -0.5em;
    padding-left: 0.4em;
}

.hero-tagline {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: clamp(0.9rem, 1.5vw, 1.15rem);
    color: var(--text-secondary);
    max-width: 500px;
    margin: 2rem auto 0;
    letter-spacing: 0.04em;
}

.hero-scroll-hint {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--accent-gold), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 0.8; transform: scaleY(1.2); }
}

/* ===================== CURVE CONNECTORS ===================== */

.curve-connector {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--bg-void);
}

.flowing-curve {
    width: 100%;
    height: 100%;
}

.curve-path {
    stroke-dasharray: 2000;
    stroke-dashoffset: 2000;
    transition: stroke-dashoffset 0.05s linear;
}

.curve-path.drawn {
    stroke-dashoffset: 0;
}

/* ===================== SECTIONS ===================== */

.act-section {
    position: relative;
    min-height: 100vh;
    padding: 6rem 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
}

#act-ii {
    background: var(--bg-surface);
}

.act-patina {
    background: var(--bg-void);
}

.act-legacy {
    background: var(--bg-surface);
    position: relative;
}

/* ===================== CHEVRON DIVIDERS ===================== */

.chevron-divider-top {
    display: flex;
    justify-content: center;
    gap: 4px;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding-top: 1.5rem;
}

.chevron-divider-top .chevron {
    width: 20px;
    height: 12px;
    clip-path: polygon(50% 0%, 100% 100%, 50% 70%, 0% 100%);
    background-color: var(--divider-gold);
    opacity: 0.4;
}

/* ===================== ASYMMETRIC LAYOUT ===================== */

.section-content.asymmetric {
    display: flex;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    align-items: center;
}

.section-content.asymmetric.reverse {
    flex-direction: row-reverse;
}

.col-large {
    flex: 0 0 58%;
}

.col-small {
    flex: 1;
}

/* ===================== PHOTO PLACEHOLDERS ===================== */

.photo-placeholder {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    border-radius: 2px;
    overflow: hidden;
    border: 1px solid var(--divider-gold);
}

.photo-coins {
    background: linear-gradient(145deg, #1A1A2A 0%, #0F0F1A 40%, #1E1520 100%);
}

.photo-scales {
    background: linear-gradient(145deg, #14141F 0%, #1A1520 40%, #0F1A1A 100%);
}

.photo-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(201, 168, 76, 0.08) 0%, rgba(61, 139, 139, 0.08) 50%, rgba(26, 92, 92, 0.06) 100%);
    mix-blend-mode: overlay;
}

.photo-grain {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.15'/%3E%3C/svg%3E");
    background-size: 128px 128px;
    opacity: 0.3;
    pointer-events: none;
}

.photo-motif {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.motif-symbol {
    font-family: 'Noto Serif KR', serif;
    font-weight: 700;
    font-size: 6rem;
    color: var(--accent-gold);
    opacity: 0.12;
}

/* ===================== TYPOGRAPHY ===================== */

.section-title {
    font-family: 'Poiret One', cursive;
    font-size: clamp(2rem, 4vw, 3.5rem);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    line-height: 0.95;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.section-title.centered {
    text-align: center;
}

.section-subtitle-kr {
    font-family: 'Noto Serif KR', serif;
    font-weight: 700;
    font-size: clamp(1.2rem, 2.5vw, 2rem);
    color: var(--accent-gold);
    line-height: 1.15;
    margin-bottom: 1.5rem;
}

.section-subtitle-kr.centered {
    text-align: center;
}

.section-body {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: 1rem;
    max-width: 520px;
}

.section-body.secondary {
    color: var(--text-secondary);
}

.section-body.centered-body {
    text-align: center;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

.data-annotation {
    display: flex;
    gap: 1rem;
    align-items: baseline;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--divider-gold);
}

.data-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.data-value {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    color: var(--accent-gold);
}

/* ===================== FAN MOTIFS ===================== */

.fan-motif {
    position: absolute;
    width: 120px;
    height: 60px;
    overflow: hidden;
}

.fan-bottom-right {
    bottom: 2rem;
    right: 2rem;
}

.fan-bottom-left {
    bottom: 2rem;
    left: 2rem;
}

.fan-arc {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform-origin: bottom center;
    border: 1px solid var(--divider-gold);
    border-radius: 50% 50% 0 0;
    opacity: 0;
    transition: opacity 0.6s var(--ease-deco), transform 0.8s var(--ease-deco);
}

.fan-arc:nth-child(1) {
    width: 40px;
    height: 20px;
    margin-left: -20px;
}
.fan-arc:nth-child(2) {
    width: 60px;
    height: 30px;
    margin-left: -30px;
}
.fan-arc:nth-child(3) {
    width: 80px;
    height: 40px;
    margin-left: -40px;
}
.fan-arc:nth-child(4) {
    width: 100px;
    height: 50px;
    margin-left: -50px;
}
.fan-arc:nth-child(5) {
    width: 120px;
    height: 60px;
    margin-left: -60px;
}

.fan-motif.visible .fan-arc {
    opacity: 0.35;
}

.fan-motif.visible .fan-arc:nth-child(1) { transition-delay: 0s; }
.fan-motif.visible .fan-arc:nth-child(2) { transition-delay: 0.1s; }
.fan-motif.visible .fan-arc:nth-child(3) { transition-delay: 0.2s; }
.fan-motif.visible .fan-arc:nth-child(4) { transition-delay: 0.3s; }
.fan-motif.visible .fan-arc:nth-child(5) { transition-delay: 0.4s; }

/* ===================== TAXONOMY (ACT III) ===================== */

.act-taxonomy {
    min-height: 100vh;
    padding: 6rem 2rem;
    background: var(--bg-elevated);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.section-header-centered {
    text-align: center;
    margin-bottom: 3rem;
}

.taxonomy-track-wrapper {
    overflow-x: auto;
    overflow-y: hidden;
    padding: 2rem 0;
    scrollbar-width: thin;
    scrollbar-color: var(--divider-gold) var(--bg-void);
}

.taxonomy-track-wrapper::-webkit-scrollbar {
    height: 4px;
}

.taxonomy-track-wrapper::-webkit-scrollbar-track {
    background: var(--bg-void);
}

.taxonomy-track-wrapper::-webkit-scrollbar-thumb {
    background: var(--divider-gold);
    border-radius: 2px;
}

.taxonomy-track {
    display: flex;
    gap: 2rem;
    padding: 0 2rem;
    width: max-content;
}

.taxonomy-card {
    position: relative;
    width: 320px;
    min-height: 360px;
    padding: 2.5rem 2rem;
    background: rgba(30, 30, 45, 0.7);
    backdrop-filter: blur(8px);
    border: 1px solid var(--divider-gold);
    display: flex;
    flex-direction: column;
    transition: border-color 0.4s var(--ease-deco), transform 0.4s var(--ease-deco);
}

.taxonomy-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-4px);
}

.card-ornament {
    width: 40px;
    height: 2px;
    background: var(--gradient-deco);
    margin-bottom: 1.5rem;
}

.card-title {
    font-family: 'Noto Serif KR', serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-primary);
    line-height: 1.15;
    margin-bottom: 0.25rem;
}

.card-title-en {
    font-family: 'Poiret One', cursive;
    font-size: 0.9rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent-gold);
    margin-bottom: 1.25rem;
}

.card-body {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.65;
    flex: 1;
}

.card-number {
    font-family: 'Poiret One', cursive;
    font-size: 3rem;
    color: var(--divider-gold);
    opacity: 0.3;
    position: absolute;
    bottom: 1rem;
    right: 1.5rem;
    line-height: 1;
}

.taxonomy-scroll-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    opacity: 0.5;
}

.hint-arrow {
    font-size: 1.2rem;
    color: var(--accent-gold);
}

.hint-text {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* ===================== LEGACY (ACT V) ===================== */

.centered-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.legacy-hangul {
    font-family: 'Noto Serif KR', serif;
    font-weight: 700;
    font-size: clamp(4rem, 10vw, 8rem);
    background: var(--gradient-deco);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 1rem;
    opacity: 0.4;
}

.closing-ornament {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin: 2.5rem 0;
}

.ornament-line {
    width: 80px;
    height: 1px;
    background: var(--gradient-deco);
}

.ornament-diamond {
    width: 10px;
    height: 10px;
    background: var(--accent-gold);
    transform: rotate(45deg);
}

.closing-kr {
    font-family: 'Noto Serif KR', serif;
    font-weight: 700;
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    color: var(--accent-gold);
    margin-bottom: 0.5rem;
}

.closing-translation {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: 1rem;
    color: var(--text-secondary);
    font-style: italic;
    letter-spacing: 0.05em;
}

/* ===================== FOOTER ===================== */

.site-footer {
    background: var(--bg-void);
    padding: 3rem 2rem 2rem;
    text-align: center;
}

.footer-ornament {
    margin-bottom: 1.5rem;
}

.chevron-band {
    display: flex;
    justify-content: center;
    gap: 6px;
}

.chevron-band .chevron {
    width: 14px;
    height: 8px;
    clip-path: polygon(50% 0%, 100% 100%, 50% 70%, 0% 100%);
    background-color: var(--divider-gold);
    opacity: 0.3;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.footer-domain {
    font-family: 'Poiret One', cursive;
    font-size: 1rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.footer-divider {
    color: var(--divider-gold);
}

.footer-year {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

/* ===================== SCROLL ANIMATIONS ===================== */

.reveal-element {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s var(--ease-deco), transform 0.6s var(--ease-deco);
}

.reveal-element.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================== RESPONSIVE ===================== */

@media (max-width: 900px) {
    .section-content.asymmetric,
    .section-content.asymmetric.reverse {
        flex-direction: column;
        gap: 2rem;
    }

    .col-large {
        flex: 1;
    }

    .nav-links {
        display: none;
    }

    .taxonomy-card {
        width: 280px;
        min-height: 320px;
    }

    .hero-hangul {
        font-size: clamp(20vh, 40vw, 50vh);
    }
}

@media (max-width: 600px) {
    .nav-inner {
        padding: 0.5rem 1rem;
    }

    .act-section {
        padding: 4rem 1rem;
    }

    .section-title {
        font-size: clamp(1.5rem, 6vw, 2.5rem);
    }

    .hero-latin {
        font-size: clamp(1.5rem, 4vw, 2.5rem);
    }
}