/* ============================================
   BTS Hooligan MV - Premium Card Design
   Ultra Premium Red & Black Aesthetic
   ============================================ */

/* CSS Variables */
:root {
    --color-primary: #E50914;
    --color-primary-bright: #FF1744;
    --color-primary-dark: #B20710;
    --color-primary-glow: rgba(229, 9, 20, 0.6);
    --color-primary-subtle: rgba(229, 9, 20, 0.15);
    --color-primary-gradient: linear-gradient(135deg, #E50914 0%, #B20710 100%);
    
    --color-black: #0A0A0A;
    --color-black-rich: #050505;
    --color-black-card: rgba(15, 15, 15, 0.8);
    --color-black-elevated: rgba(20, 20, 20, 0.9);
    --color-black-glass: rgba(10, 10, 10, 0.7);
    
    --color-white: #FFFFFF;
    --color-gray-100: #E5E5E5;
    --color-gray-200: #A0A0A0;
    --color-gray-300: #666666;
    
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Montserrat', sans-serif;
    
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-bounce: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    --radius: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 60px rgba(229, 9, 20, 0.2);
    --shadow-glow: 0 0 40px rgba(229, 9, 20, 0.3);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--color-black-rich);
    color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
 radial-gradient(ellipse 100% 60% at 50% 0%, rgba(229, 9, 20, 0.08) 0%, transparent 50%),
 radial-gradient(ellipse 80% 50% at 80% 80%, rgba(229, 9, 20, 0.05) 0%, transparent 40%);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-black);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary-gradient);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-bright);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    background: rgba(5, 5, 5, 0.85);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-bottom: 1px solid rgba(229, 9, 20, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
    gap: 4px;
}

.logo-bts {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--color-white);
    letter-spacing: 6px;
    text-shadow: 0 0 20px rgba(229, 9, 20, 0.5);
}

.logo-hooligan {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--color-primary);
    letter-spacing: 8px;
}

.nav-links {
    display: flex;
    gap: 48px;
}

.nav-links a {
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-gray-200);
    transition: all var(--transition);
    padding: 10px 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-primary-gradient);
    transition: width var(--transition);
    border-radius: 2px;
}

.nav-links a:hover {
    color: var(--color-white);
    text-shadow: 0 0 15px rgba(229, 9, 20, 0.5);
}

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

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 28px;
    height: 2px;
    background: var(--color-white);
    transition: all var(--transition);
    border-radius: 2px;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-black-rich);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
 radial-gradient(ellipse 80% 50% at 20% 30%, rgba(229, 9, 20, 0.15) 0%, transparent 50%),
 radial-gradient(ellipse 60% 40% at 80% 70%, rgba(229, 9, 20, 0.1) 0%, transparent 50%);
    animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { opacity: 0.6; }
    100% { opacity: 1; }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 50% 50%, var(--color-primary-glow) 0%, transparent 60%);
    opacity: 0.2;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
 radial-gradient(2px 2px at 20px 30px, var(--color-primary), transparent),
 radial-gradient(2px 2px at 40px 70px, var(--color-white), transparent),
 radial-gradient(1px 1px at 90px 40px, var(--color-primary), transparent),
 radial-gradient(2px 2px at 130px 80px, var(--color-white), transparent),
 radial-gradient(1px 1px at 160px 120px, var(--color-primary), transparent);
    background-repeat: repeat;
    background-size: 200px 200px;
    opacity: 0.5;
    animation: particleFloat 20s linear infinite;
}

@keyframes particleFloat {
    0% { transform: translateY(0); }
    100% { transform: translateY(-200px); }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 20px;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    background: rgba(229, 9, 20, 0.15);
    border: 1px solid rgba(229, 9, 20, 0.4);
    color: var(--color-primary-bright);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 40px;
    border-radius: 50px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(229, 9, 20, 0.2);
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: blink 2s ease-in-out infinite;
    box-shadow: 0 0 10px var(--color-primary);
}

@keyframes blink {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}

.hero-title {
    margin-bottom: 24px;
}

.title-bts {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(5rem, 18vw, 12rem);
    line-height: 0.85;
    color: var(--color-white);
    letter-spacing: 25px;
    text-shadow: 0 0 60px rgba(255, 255, 255, 0.3);
}

.title-hooligan {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 10vw, 6rem);
    line-height: 1.1;
    color: var(--color-primary);
    letter-spacing: 18px;
    text-shadow: 0 0 40px var(--color-primary-glow);
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.4rem);
    font-weight: 300;
    letter-spacing: 8px;
    text-transform: uppercase;
    color: var(--color-gray-100);
    margin-bottom: 20px;
}

.hero-description {
    max-width: 550px;
    margin: 0 auto 50px;
    font-size: 1.1rem;
    color: var(--color-gray-200);
    line-height: 1.9;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 70px;
}

.btn {
    padding: 16px 48px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--color-primary-gradient);
    color: var(--color-white);
    box-shadow: 0 4px 20px rgba(229, 9, 20, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(229, 9, 20, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    background: rgba(229, 9, 20, 0.1);
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
}

.stat {
    text-align: center;
    position: relative;
}

.stat::after {
    content: '';
    position: absolute;
    right: -40px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 50px;
    background: linear-gradient(180deg, transparent, var(--color-primary), transparent);
}

.stat:last-child::after {
    display: none;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 4.5rem;
    color: var(--color-primary);
    line-height: 1;
    text-shadow: 0 0 30px var(--color-primary-glow);
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-gray-200);
    margin-top: 10px;
}

.scroll-indicator {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

.scroll-indicator span {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-gray-200);
    margin-bottom: 15px;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    margin: 0 auto;
    border-right: 2px solid var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
    transform: rotate(45deg);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: rotate(45deg) translateY(0); }
    40% { transform: rotate(45deg) translateY(12px); }
    60% { transform: rotate(45deg) translateY(6px); }
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: 120px 0;
    position: relative;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6vw, 5rem);
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: 8px;
    color: var(--color-white);
    text-shadow: 0 0 40px rgba(255, 255, 255, 0.2);
}

.section-subtitle {
    text-align: center;
    color: var(--color-gray-200);
    margin-bottom: 70px;
    text-transform: uppercase;
    letter-spacing: 5px;
    font-size: 0.9rem;
}

/* ============================================
   Videos Section - Premium Box Cards
   ============================================ */
.videos-section {
    background: linear-gradient(180deg, var(--color-black-rich) 0%, var(--color-black) 100%);
}

.videos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.video-card {
    background: var(--color-black-card);
    border-radius: var(--radius-xl);
    padding: 50px 35px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    backdrop-filter: blur(20px);
}

.video-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-primary-gradient);
    opacity: 0;
    transition: opacity var(--transition);
}

.video-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(229, 9, 20, 0.08) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition);
}

.video-card:hover {
    transform: translateY(-12px) scale(1.02);
    border-color: rgba(229, 9, 20, 0.4);
    box-shadow: var(--shadow-hover);
}

.video-card:hover::before,
.video-card:hover::after {
    opacity: 1;
}

.video-thumbnail {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--color-primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
    transition: all var(--transition-smooth);
    box-shadow: 0 10px 40px rgba(229, 9, 20, 0.3);
    position: relative;
    z-index: 2;
}

.video-thumbnail::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: var(--color-primary-gradient);
    opacity: 0;
    z-index: -1;
    transition: opacity var(--transition);
}

.video-card:hover .video-thumbnail {
    transform: scale(1.15);
    box-shadow: var(--shadow-glow);
}

.video-card:hover .video-thumbnail::before {
    opacity: 0.5;
    filter: blur(15px);
}

.play-icon {
    font-size: 2.5rem;
    color: var(--color-white);
    margin-left: 5px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.video-title {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 4px;
    margin-bottom: 25px;
    color: var(--color-white);
    transition: color var(--transition);
    position: relative;
    z-index: 2;
}

.video-card:hover .video-title {
    color: var(--color-primary);
    text-shadow: 0 0 20px var(--color-primary-glow);
}

.btn-video {
    background: var(--color-primary-gradient);
    color: var(--color-white);
    padding: 14px 40px;
    font-size: 0.8rem;
    box-shadow: 0 4px 20px rgba(229, 9, 20, 0.3);
    position: relative;
    z-index: 2;
}

.btn-video:hover {
    box-shadow: 0 6px 30px rgba(229, 9, 20, 0.5);
}

/* ============================================
   Arirang Section
   ============================================ */
.arirang-section {
    background: var(--color-black-rich);
    position: relative;
}

.arirang-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse 60% 40% at 30% 50%, rgba(229, 9, 20, 0.05) 0%, transparent 50%);
}

.arirang-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.arirang-text h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    letter-spacing: 4px;
    margin-bottom: 24px;
    color: var(--color-primary);
}

.arirang-text p {
    color: var(--color-gray-100);
    margin-bottom: 24px;
    line-height: 2;
    font-size: 1rem;
}

.arirang-visual {
    display: flex;
    justify-content: center;
}

.arirang-symbol {
    width: 320px;
    height: 320px;
    border: 2px solid rgba(229, 9, 20, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle, var(--color-primary-subtle) 0%, transparent 70%);
    animation: symbolPulse 4s ease-in-out infinite;
    position: relative;
}

.arirang-symbol::before {
    content: '';
    position: absolute;
    inset: -20px;
    border-radius: 50%;
    border: 1px solid rgba(229, 9, 20, 0.1);
    animation: symbolPulse 4s ease-in-out infinite 0.5s;
}

@keyframes symbolPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

.arirang-symbol span {
    font-size: 5rem;
    color: var(--color-white);
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
}

/* ============================================
   Tracklist Section - Premium Box Cards
   ============================================ */
.tracklist-section {
    background: linear-gradient(180deg, var(--color-black) 0%, var(--color-black-rich) 100%);
}

.tracklist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 24px;
}

.track-card {
    background: var(--color-black-card);
    border-radius: var(--radius-lg);
    padding: 35px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.06);
    min-height: 200px;
    backdrop-filter: blur(20px);
}

.track-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 5px;
    background: var(--color-primary-gradient);
    opacity: 0;
    transition: opacity var(--transition);
}

.track-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(229, 9, 20, 0.08) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition);
}

.track-card:hover {
    transform: translateY(-10px) translateX(5px);
    border-color: rgba(229, 9, 20, 0.35);
    box-shadow: var(--shadow-hover);
}

.track-card:hover::before,
.track-card:hover::after {
    opacity: 1;
}

.track-number {
    font-family: var(--font-display);
    font-size: 4rem;
    color: var(--color-primary);
    opacity: 0.12;
    position: absolute;
    top: 10px;
    right: 25px;
    line-height: 1;
    transition: all var(--transition);
    z-index: 1;
}

.track-card:hover .track-number {
    opacity: 0.5;
    text-shadow: 0 0 20px var(--color-primary-glow);
}

.track-info {
    position: relative;
    z-index: 2;
}

.track-title {
    font-family: var(--font-display);
    font-size: 1.8rem;
    letter-spacing: 3px;
    margin-bottom: 15px;
    color: var(--color-white);
    transition: color var(--transition);
}

.track-card:hover .track-title {
    color: var(--color-primary);
    text-shadow: 0 0 15px var(--color-primary-glow);
}

.track-meaning {
    color: var(--color-gray-200);
    font-size: 0.9rem;
    line-height: 1.9;
}

/* ============================================
   Members Section - Premium Box Cards
   ============================================ */
.members-section {
    background: var(--color-black-rich);
    position: relative;
}

.members-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse 50% 30% at 70% 30%, rgba(229, 9, 20, 0.05) 0%, transparent 50%);
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 28px;
    position: relative;
    z-index: 1;
}

.member-card {
    background: var(--color-black-card);
    border-radius: var(--radius-xl);
    padding: 45px 32px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    backdrop-filter: blur(20px);
}

.member-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-primary-gradient);
    opacity: 0;
    transition: opacity var(--transition);
}

.member-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(229, 9, 20, 0.06) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition);
}

.member-card:hover {
    transform: translateY(-12px) scale(1.02);
    border-color: rgba(229, 9, 20, 0.35);
    box-shadow: var(--shadow-hover);
}

.member-card:hover::before,
.member-card:hover::after {
    opacity: 1;
}

.member-avatar {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    background: var(--color-primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    transition: all var(--transition-smooth);
    border: 3px solid rgba(229, 9, 20, 0.3);
    position: relative;
    z-index: 2;
    box-shadow: 0 10px 40px rgba(229, 9, 20, 0.2);
}

.member-card:hover .member-avatar {
    transform: scale(1.12);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.member-initials {
    font-family: var(--font-display);
    font-size: 2.2rem;
    color: var(--color-white);
    letter-spacing: 3px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.member-info {
    position: relative;
    z-index: 2;
}

.member-name {
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 3px;
    margin-bottom: 10px;
    color: var(--color-white);
    transition: color var(--transition);
}

.member-card:hover .member-name {
    color: var(--color-primary);
    text-shadow: 0 0 15px var(--color-primary-glow);
}

.member-role {
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 8px;
}

.member-birthday {
    color: var(--color-gray-200);
    font-size: 0.8rem;
    margin-bottom: 18px;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    display: inline-block;
}

.member-birthday::before {
    content: '🎂 ';
}

.member-bio {
    color: var(--color-gray-200);
    font-size: 0.88rem;
    line-height: 1.9;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-black-rich);
    padding: 60px 0;
    border-top: 1px solid rgba(229, 9, 20, 0.1);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse 50% 100% at 50% 100%, rgba(229, 9, 20, 0.05) 0%, transparent 50%);
}

.footer-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 25px;
    gap: 4px;
}

.footer-text {
    color: var(--color-gray-200);
    font-size: 0.85rem;
    margin-bottom: 12px;
}

.footer-tagline {
    color: var(--color-primary);
    font-family: var(--font-display);
    font-size: 1.3rem;
    letter-spacing: 5px;
    text-shadow: 0 0 20px var(--color-primary-glow);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1200px) {
    .tracklist-grid {
 grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    }
}

@media (max-width: 1024px) {
    .arirang-content {
 grid-template-columns: 1fr;
 gap: 50px;
    }
    
    .arirang-visual {
 order: -1;
    }
    
    .videos-grid {
 grid-template-columns: repeat(2, 1fr);
    }
    
    .video-card:last-child {
 grid-column: span 2;
 max-width: 400px;
 margin: 0 auto;
    }
    
    .hero-stats {
 gap: 60px;
    }
}

@media (max-width: 768px) {
    .nav-links {
 position: fixed;
 top: 0;
 left: 0;
 right: 0;
 bottom: 0;
 background: rgba(5, 5, 5, 0.98);
 backdrop-filter: blur(40px);
 flex-direction: column;
 align-items: center;
 justify-content: center;
 gap: 35px;
 transform: translateY(-100%);
 opacity: 0;
 visibility: hidden;
 transition: all var(--transition-smooth);
    }

    .nav-links.active {
 transform: translateY(0);
 opacity: 1;
 visibility: visible;
    }

    .mobile-menu-btn {
 display: flex;
    }
    
    .nav-links a {
 font-size: 1.1rem;
 letter-spacing: 4px;
    }

    .hero-stats {
 flex-direction: column;
 gap: 35px;
    }
    
    .stat::after {
 display: none;
    }

    .hero-cta {
 flex-direction: column;
 align-items: center;
    }

    .btn {
 width: 100%;
 max-width: 300px;
    }
    
    .section {
 padding: 80px 0;
    }
    
    .videos-grid {
 grid-template-columns: 1fr;
    }
    
    .video-card:last-child {
 grid-column: span 1;
 max-width: none;
    }
    
    .tracklist-grid {
 grid-template-columns: 1fr;
    }
    
    .members-grid {
 grid-template-columns: 1fr;
    }
    
    .arirang-symbol {
 width: 250px;
 height: 250px;
    }
    
    .arirang-symbol span {
 font-size: 3.5rem;
    }
}

@media (max-width: 480px) {
    .container {
 padding: 0 20px;
    }
    
    .title-bts {
 letter-spacing: 12px;
    }

    .title-hooligan {
 letter-spacing: 10px;
    }
    
    .track-card {
 padding: 28px;
    }
    
    .member-card {
 padding: 35px 25px;
    }
    
    .video-card {
 padding: 40px 28px;
    }
    
    .hero-badge {
 padding: 10px 20px;
 font-size: 0.65rem;
 letter-spacing: 3px;
    }
}