:root {
    --bg-primary: #111111;
    --bg-secondary: #1A1A1A;
    --bg-darkest: #0A0A0A;
    --bg-card: #1E1E1E;
    --color-primary: #FFFFFF;
    --color-secondary: #9CA3AF;
    --color-accent: #1DB954;
    --color-highlight: #8B5CF6;
    --color-accent-hover: #1ed760;
    --color-highlight-hover: #a78bfa;
    --font-display: 'Oswald', sans-serif;
    --font-body: 'Noto Sans KR', sans-serif;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--color-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-darkest); }
::-webkit-scrollbar-thumb { background: var(--color-accent); border-radius: 4px; }

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }

.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(17, 17, 17, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 0.75rem 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--color-primary);
}

.header-logo .logo-accent { color: var(--color-accent); }

.vinyl-spinner {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: conic-gradient(from 0deg, #333, #111, #333, #111, #333);
    position: relative;
    animation: spin 3s linear infinite;
}

.vinyl-spinner::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
}

.vinyl-spinner::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-secondary);
    position: relative;
    padding: 0.25rem 0;
}

.nav-links a:hover,
.nav-links a.active { color: var(--color-accent); }

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-accent);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(17, 17, 17, 0.98);
    z-index: 999;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

.mobile-menu.active { display: flex; }

.mobile-menu a {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-primary);
}

.mobile-menu a:hover { color: var(--color-accent); }

.mobile-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: 2rem;
    cursor: pointer;
}

/* Hero */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 5rem;
    overflow: hidden;
}

.hero-waveform-bg {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 3px;
    opacity: 0.08;
    pointer-events: none;
}

.wave-bar {
    width: 4px;
    background: var(--color-accent);
    border-radius: 2px 2px 0 0;
    animation: waveAnim 1.5s ease-in-out infinite;
}

@keyframes waveAnim {
    0%, 100% { height: 20px; }
    50% { height: 100px; }
}

.hero-purple-wave {
    position: absolute;
    top: 20%;
    right: -5%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15), transparent 70%);
    pointer-events: none;
}

.hero-content { position: relative; z-index: 2; max-width: 800px; }

.hero-accent-bar {
    width: 60px;
    height: 4px;
    background: var(--color-accent);
    margin-bottom: 2rem;
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    line-height: 1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-title .highlight { color: var(--color-highlight); }

.hero-desc {
    font-size: 1.125rem;
    color: var(--color-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
    line-height: 1.8;
}

.hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-decoration: none;
}

.btn-green {
    background: var(--color-accent);
    color: var(--bg-primary);
    border-color: var(--color-accent);
}

.btn-green:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(29, 185, 84, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

.btn-purple {
    background: var(--color-highlight);
    color: var(--color-primary);
    border-color: var(--color-highlight);
}

.btn-purple:hover {
    background: var(--color-highlight-hover);
    border-color: var(--color-highlight-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(139, 92, 246, 0.3);
}

/* Features */
.features-section { padding: 6rem 0; background: var(--bg-secondary); }

.section-header { text-align: center; margin-bottom: 4rem; }

.section-tag {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--color-secondary);
    max-width: 500px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-card-body { padding: 1.5rem; }

.feature-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.feature-card:nth-child(1) .feature-card-icon,
.feature-card:nth-child(4) .feature-card-icon {
    background: rgba(29, 185, 84, 0.15);
    color: var(--color-accent);
}

.feature-card:nth-child(2) .feature-card-icon,
.feature-card:nth-child(5) .feature-card-icon {
    background: rgba(139, 92, 246, 0.15);
    color: var(--color-highlight);
}

.feature-card:nth-child(3) .feature-card-icon,
.feature-card:nth-child(6) .feature-card-icon {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-primary);
}

.feature-card-title { font-size: 1.125rem; margin-bottom: 0.5rem; }
.feature-card-desc { color: var(--color-secondary); font-size: 0.875rem; line-height: 1.6; }

/* Equalizer */
.equalizer { display: flex; align-items: flex-end; gap: 2px; height: 24px; }

.equalizer .bar {
    width: 3px;
    background: var(--color-accent);
    border-radius: 1px;
    animation: eqBar 0.8s ease-in-out infinite;
}

.equalizer .bar:nth-child(1) { animation-delay: 0s; height: 8px; }
.equalizer .bar:nth-child(2) { animation-delay: 0.1s; height: 16px; }
.equalizer .bar:nth-child(3) { animation-delay: 0.2s; height: 12px; }
.equalizer .bar:nth-child(4) { animation-delay: 0.3s; height: 20px; }
.equalizer .bar:nth-child(5) { animation-delay: 0.15s; height: 14px; }

@keyframes eqBar {
    0%, 100% { transform: scaleY(0.3); }
    50% { transform: scaleY(1); }
}

/* Board Widgets */
.board-section { padding: 6rem 0; background: var(--bg-primary); }

.board-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }

.board-widget {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.board-widget-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.board-widget-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.board-widget-more {
    font-family: var(--font-display);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-secondary);
}

.board-widget-more:hover { color: var(--color-accent); }

.badge-new {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    background: var(--color-accent);
    color: var(--bg-primary);
    font-family: var(--font-display);
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 2px;
    letter-spacing: 0.05em;
}

.tracklist { list-style: none; }

.tracklist-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    transition: var(--transition);
    cursor: pointer;
}

.tracklist-item:hover {
    background: rgba(139, 92, 246, 0.05);
    padding-left: 0.5rem;
    border-color: rgba(139, 92, 246, 0.2);
}

.tracklist-item:last-child { border-bottom: none; }

.track-number {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-secondary);
    min-width: 24px;
    text-align: center;
}

.tracklist-item:hover .track-number { color: var(--color-highlight); }

.track-info { flex: 1; min-width: 0; }

.track-title {
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--color-primary);
    text-decoration: none;
    display: block;
}

.track-title:hover { color: var(--color-accent); }

.track-meta { font-size: 0.75rem; color: var(--color-secondary); margin-top: 0.125rem; }

.track-date {
    font-size: 0.75rem;
    color: var(--color-secondary);
    font-family: var(--font-display);
}

/* Stats */
.stats-section {
    padding: 6rem 0;
    background: var(--bg-darkest);
    position: relative;
    overflow: hidden;
}

.stats-vinyl-bg {
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    border: 40px solid rgba(255, 255, 255, 0.02);
    pointer-events: none;
}

.stats-vinyl-bg::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(29, 185, 84, 0.1);
    border: 2px solid rgba(29, 185, 84, 0.2);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 2;
}

.stat-card { text-align: center; padding: 2rem 1rem; }

.stat-number {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-secondary);
}

.stat-icon { font-size: 1.5rem; color: var(--color-highlight); margin-bottom: 1rem; opacity: 0.6; }

/* CTA */
.cta-section {
    padding: 6rem 0;
    background: var(--color-highlight);
    position: relative;
    overflow: hidden;
}

.cta-record {
    position: absolute;
    right: -80px;
    top: 50%;
    transform: translateY(-50%);
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: conic-gradient(from 0deg, rgba(0,0,0,0.3), rgba(0,0,0,0.1), rgba(0,0,0,0.3), rgba(0,0,0,0.1), rgba(0,0,0,0.3));
    opacity: 0.3;
    animation: spin 8s linear infinite;
}

.cta-record::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(29, 185, 84, 0.5);
}

.cta-content { position: relative; z-index: 2; max-width: 600px; }

.cta-title { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 1rem; }
.cta-desc { font-size: 1.125rem; opacity: 0.9; margin-bottom: 2rem; line-height: 1.8; }

/* Footer */
.site-footer {
    padding: 4rem 0 2rem;
    background: var(--bg-darkest);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.footer-brand-title .accent { color: var(--color-accent); }

.footer-brand-desc {
    font-size: 0.875rem;
    color: var(--color-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.footer-equalizer { display: flex; align-items: flex-end; gap: 3px; height: 20px; }

.footer-equalizer .eq-bar {
    width: 3px;
    border-radius: 1px;
    animation: eqBar 1s ease-in-out infinite;
}

.footer-equalizer .eq-bar:nth-child(odd) { background: var(--color-accent); }
.footer-equalizer .eq-bar:nth-child(even) { background: var(--color-highlight); }

.footer-equalizer .eq-bar:nth-child(1) { height: 6px; animation-delay: 0s; }
.footer-equalizer .eq-bar:nth-child(2) { height: 12px; animation-delay: 0.1s; }
.footer-equalizer .eq-bar:nth-child(3) { height: 8px; animation-delay: 0.2s; }
.footer-equalizer .eq-bar:nth-child(4) { height: 16px; animation-delay: 0.3s; }
.footer-equalizer .eq-bar:nth-child(5) { height: 10px; animation-delay: 0.4s; }
.footer-equalizer .eq-bar:nth-child(6) { height: 14px; animation-delay: 0.15s; }
.footer-equalizer .eq-bar:nth-child(7) { height: 6px; animation-delay: 0.25s; }
.footer-equalizer .eq-bar:nth-child(8) { height: 18px; animation-delay: 0.35s; }

.footer-col-title {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.25rem;
    color: var(--color-primary);
}

.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.625rem; }
.footer-links a { font-size: 0.875rem; color: var(--color-secondary); }
.footer-links a:hover { color: var(--color-accent); }

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-copy { font-size: 0.75rem; color: var(--color-secondary); }

.footer-socials { display: flex; gap: 1rem; }

.footer-socials a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-secondary);
    font-size: 0.875rem;
    transition: var(--transition);
}

.footer-socials a:hover { background: var(--color-accent); color: var(--bg-primary); }

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible { opacity: 1; transform: translateY(0); }

.slide-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-left.visible { opacity: 1; transform: translateX(0); }

.slide-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-right.visible { opacity: 1; transform: translateX(0); }

/* Responsive */
@media (max-width: 1279px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 1023px) {
    .board-grid { grid-template-columns: 1fr; }
    .cta-record { width: 250px; height: 250px; right: -60px; }
}

@media (max-width: 767px) {
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    .hero-title { font-size: clamp(2.5rem, 12vw, 4rem); }
    .features-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
    .hero-buttons { flex-direction: column; }
    .btn { justify-content: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
    .cta-record { display: none; }
    .cta-content { text-align: center; }
    .section-header { margin-bottom: 3rem; }
}

@media (max-width: 359px) {
    html { font-size: 14px; }
    .container { padding: 0 1rem; }
    .hero-title { font-size: 2.25rem; }
    .stats-grid { grid-template-columns: 1fr; }
}

@media (min-width: 1920px) { html { font-size: 17px; } }
@media (min-width: 2560px) { html { font-size: 19px; } .container { max-width: 1600px; } }
@media (min-width: 3840px) { html { font-size: 22px; } .container { max-width: 2200px; } }