/* ==========================================
   Reset & Base Styles
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --color-dark-brown: #1a0f0a;
    --color-black: #0a0604;
    --color-gold: #d4af37;
    --color-gold-light: #f5d76e;
    --color-orange: #cc6633;
    --color-white: #ffffff;
    --color-cream: #f5f0e8;
    --color-gray: #b8b0a8;
    --color-gray-dark: #4a4340;
    
    /* Fonts */
    --font-serif: 'Noto Serif JP', serif;
    --font-sans: 'Noto Sans JP', sans-serif;
    
    /* Spacing */
    --section-padding: 100px 20px;
    --container-max-width: 1200px;
    
    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background: linear-gradient(135deg, var(--color-black) 0%, var(--color-dark-brown) 100%);
    color: var(--color-cream);
    line-height: 1.8;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================
   Header
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 6, 4, 0.95);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    box-shadow: 0 2px 20px rgba(212, 175, 55, 0.1);
    transition: var(--transition-smooth);
}

.header.scrolled {
    padding: 10px 0;
    box-shadow: 0 2px 30px rgba(212, 175, 55, 0.2);
}

.header-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-direction: row;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-gold);
    letter-spacing: 0.05em;
}

.header-cta-btn {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-orange) 100%);
    color: var(--color-white);
    border: none;
    padding: 12px 30px;
    border-radius: 50px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.header-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(212, 175, 55, 0.5);
}

.header-cta-btn i {
    margin-right: 8px;
}

/* Header SNS Buttons */
.header-sns-buttons {
    display: flex;
    gap: 10px;
    align-items: center;
}

.header-sns-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 20px;
    border-radius: 50px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    font-weight: 500;
}

.header-sns-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 255, 255, 0.2);
}

.header-sns-line {
    background: rgba(0, 195, 0, 0.15);
    border-color: #00c300;
}

.header-sns-line:hover {
    background: #00c300;
    border-color: #00c300;
}

.header-sns-twitter {
    background: rgba(29, 161, 242, 0.15);
    border-color: #1da1f2;
}

.header-sns-twitter:hover {
    background: #1da1f2;
    border-color: #1da1f2;
}

.header-sns-btn i {
    margin-right: 6px;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    animation: subtle-zoom 20s ease-in-out infinite alternate;
}

@keyframes subtle-zoom {
    from { transform: scale(1); }
    to { transform: scale(1.05); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(10, 6, 4, 0.8) 0%,
        rgba(26, 15, 10, 0.7) 50%,
        rgba(10, 6, 4, 0.85) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    padding: 0 20px;
}

.hero-subtitle {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-gold);
    margin-bottom: 20px;
    letter-spacing: 0.15em;
    opacity: 0;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 40px;
    line-height: 1.3;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    opacity: 0;
}

.hero-info {
    margin-bottom: 40px;
    opacity: 0;
}

.hero-date,
.hero-venue {
    font-size: 1.2rem;
    color: var(--color-cream);
    margin: 10px 0;
    font-weight: 400;
}

.hero-date i,
.hero-venue i {
    color: var(--color-gold);
    margin-right: 10px;
}

.hero-cta-btn {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-orange) 100%);
    color: var(--color-white);
    border: none;
    padding: 18px 50px;
    border-radius: 50px;
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.4);
    margin-bottom: 60px;
    opacity: 0;
}

.hero-cta-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 40px rgba(212, 175, 55, 0.6);
}

.hero-cta-btn i {
    margin-left: 10px;
    transition: margin-left 0.3s ease;
}

.hero-cta-btn:hover i {
    margin-left: 15px;
}

/* SNS Share in Hero */
.sns-share {
    margin-top: 40px;
    opacity: 0;
}

.sns-label {
    font-size: 0.9rem;
    color: var(--color-gray);
    margin-bottom: 15px;
}

.sns-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.sns-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 10px 25px;
    border-radius: 50px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.sns-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 255, 255, 0.2);
}

.sns-line {
    background: rgba(0, 195, 0, 0.2);
    border-color: #00c300;
}

.sns-line:hover {
    background: #00c300;
    border-color: #00c300;
}

.sns-twitter {
    background: rgba(29, 161, 242, 0.2);
    border-color: #1da1f2;
}

.sns-twitter:hover {
    background: #1da1f2;
    border-color: #1da1f2;
}

.sns-btn i {
    margin-right: 8px;
}

/* Fade In Animation */
.fade-in {
    animation: fadeInUp 1s ease-out forwards;
}

.fade-in:nth-child(1) { animation-delay: 0.2s; }
.fade-in:nth-child(2) { animation-delay: 0.4s; }
.fade-in:nth-child(3) { animation-delay: 0.6s; }
.fade-in:nth-child(4) { animation-delay: 0.8s; }
.fade-in:nth-child(5) { animation-delay: 1s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================
   Section Styles
   ========================================== */
.section {
    padding: var(--section-padding);
    position: relative;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    color: var(--color-gold);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
}

.section-subtitle {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    text-align: center;
    color: var(--color-gray);
    margin-bottom: 50px;
}

/* Scroll Fade Animation */
.scroll-fade {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ==========================================
   Welcome Section
   ========================================== */
.welcome-section {
    background: rgba(26, 15, 10, 0.5);
    backdrop-filter: blur(5px);
}

.welcome-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 2;
}

.welcome-content p {
    margin-bottom: 30px;
    text-align: justify;
}

.welcome-content .highlight {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    color: var(--color-gold-light);
    text-align: center;
    padding: 30px;
    background: rgba(212, 175, 55, 0.1);
    border-left: 4px solid var(--color-gold);
    border-radius: 8px;
    margin-top: 40px;
}

/* ==========================================
   Concept Section
   ========================================== */
.concept-section {
    background: linear-gradient(135deg, rgba(10, 6, 4, 0.8) 0%, rgba(26, 15, 10, 0.6) 100%);
}

.concept-main {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    text-align: center;
    color: var(--color-gold-light);
    margin-bottom: 60px;
    padding: 20px;
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.concept-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 15px;
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition-smooth);
}

.concept-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-gold);
    box-shadow: 0 10px 40px rgba(212, 175, 55, 0.3);
}

.concept-icon {
    font-size: 3rem;
    color: var(--color-gold);
    margin-bottom: 20px;
}

.concept-card h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-white);
    margin-bottom: 15px;
}

.concept-card p {
    font-size: 1rem;
    color: var(--color-gray);
    line-height: 1.8;
}

/* ==========================================
   Program Section
   ========================================== */
.program-section {
    background: rgba(26, 15, 10, 0.7);
}

.program-subtitle {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    text-align: center;
    color: var(--color-orange);
    margin-bottom: 50px;
}

.program-list {
    max-width: 800px;
    margin: 0 auto 60px;
}

.program-item {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-left: 4px solid var(--color-gold);
    padding: 25px 30px;
    margin-bottom: 20px;
    border-radius: 8px;
    transition: var(--transition-smooth);
}

.program-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(10px);
    box-shadow: 0 5px 20px rgba(212, 175, 55, 0.2);
}

.program-composer {
    font-size: 0.9rem;
    color: var(--color-gold);
    margin-bottom: 8px;
    letter-spacing: 0.05em;
}

.program-title {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    color: var(--color-white);
    font-weight: 500;
}

.program-note {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-gray);
    font-style: italic;
    margin-top: 30px;
}

/* CTA Box */
.cta-box {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.15) 0%, rgba(204, 102, 51, 0.15) 100%);
    border: 2px solid var(--color-gold);
    border-radius: 15px;
    padding: 50px;
    text-align: center;
    margin-top: 60px;
}

.cta-box h3 {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    color: var(--color-gold-light);
    margin-bottom: 30px;
}

.cta-button {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-orange) 100%);
    color: var(--color-white);
    border: none;
    padding: 18px 50px;
    border-radius: 50px;
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.4);
}

.cta-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 40px rgba(212, 175, 55, 0.6);
}

.cta-button i {
    margin-left: 10px;
}

/* ==========================================
   Artists Section
   ========================================== */
.artists-section {
    background: linear-gradient(135deg, rgba(10, 6, 4, 0.9) 0%, rgba(26, 15, 10, 0.8) 100%);
}

.artists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 60px;
    margin-top: 60px;
}

.artist-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.artist-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 50px rgba(212, 175, 55, 0.3);
    border-color: var(--color-gold);
}

.artist-image-wrapper {
    width: 100%;
    height: 400px;
    overflow: hidden;
}

.artist-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.artist-image-trumpet {
    object-position: center 30%;
}

.artist-image-piano {
    object-position: center 35%;
}

.artist-card:hover .artist-image {
    transform: scale(1.1);
}

.artist-info {
    padding: 30px;
}

.artist-name {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    color: var(--color-gold);
    margin-bottom: 10px;
}

.artist-instrument {
    font-size: 1rem;
    color: var(--color-orange);
    margin-bottom: 20px;
    letter-spacing: 0.1em;
}

.artist-bio {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--color-cream);
}

.artist-bio p {
    margin-bottom: 15px;
}

/* ==========================================
   Venue Section
   ========================================== */
.venue-section {
    background: rgba(26, 15, 10, 0.6);
}

.venue-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-top: 60px;
}

.venue-info {
    padding: 20px;
}

.venue-name {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--color-gold);
    margin-bottom: 20px;
}

.venue-address {
    font-size: 1.1rem;
    color: var(--color-cream);
    margin-bottom: 30px;
    line-height: 1.8;
}

.venue-address i {
    color: var(--color-gold);
    margin-right: 10px;
}

.venue-access,
.venue-features {
    margin-bottom: 30px;
}

.venue-access h4,
.venue-features h4 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    color: var(--color-gold-light);
    margin-bottom: 15px;
}

.venue-access h4 i,
.venue-features h4 i {
    margin-right: 10px;
}

.venue-access ul {
    list-style: none;
    padding-left: 0;
}

.venue-access li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--color-cream);
}

.venue-access li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-gold);
}

.venue-features p {
    line-height: 1.8;
    color: var(--color-cream);
}

.venue-map {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    height: fit-content;
}

.venue-map iframe {
    display: block;
    border-radius: 15px;
}

/* ==========================================
   Ticket Section
   ========================================== */
.ticket-section {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, rgba(204, 102, 51, 0.1) 100%);
    padding: 120px 20px;
}

.ticket-content {
    max-width: 900px;
    margin: 0 auto;
}

.ticket-info-box {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 2px solid var(--color-gold);
    border-radius: 20px;
    padding: 50px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.ticket-details h3,
.ticket-purchase h3 {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    color: var(--color-gold);
    margin-bottom: 30px;
}

.ticket-detail-item {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
    align-items: flex-start;
}

.ticket-detail-item i {
    font-size: 1.5rem;
    color: var(--color-gold);
    margin-top: 5px;
}

.ticket-detail-item strong {
    display: block;
    color: var(--color-gold-light);
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.ticket-detail-item p {
    color: var(--color-cream);
    line-height: 1.8;
}

.ticket-notice {
    background: rgba(212, 175, 55, 0.1);
    border-left: 3px solid var(--color-orange);
    padding: 20px;
    border-radius: 8px;
    margin-top: 10px;
}

.ticket-notice i {
    color: var(--color-orange);
}

.ticket-notice strong {
    color: var(--color-orange);
}

.ticket-notice p {
    font-size: 0.9rem;
    line-height: 1.6;
}

.ticket-purchase {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.ticket-message {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    color: var(--color-gold-light);
    margin-bottom: 30px;
}

.ticket-purchase-btn {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-orange) 100%);
    color: var(--color-white);
    border: none;
    padding: 20px 60px;
    border-radius: 50px;
    font-family: var(--font-sans);
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 10px 40px rgba(212, 175, 55, 0.5);
    margin-bottom: 15px;
}

.ticket-purchase-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 50px rgba(212, 175, 55, 0.7);
}

.ticket-purchase-btn i {
    margin-right: 10px;
}

.ticket-note {
    font-size: 0.9rem;
    color: var(--color-gray);
}

/* SNS Share in Ticket Section */
.sns-share-section {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 15px;
    padding: 40px;
    text-align: center;
}

.sns-share-section h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-gold-light);
    margin-bottom: 30px;
}

.sns-buttons-large {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.sns-btn-large {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border: 2px solid;
    padding: 15px 40px;
    border-radius: 50px;
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.sns-btn-large:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.3);
}

.sns-btn-large.sns-line {
    border-color: #00c300;
    background: rgba(0, 195, 0, 0.2);
}

.sns-btn-large.sns-line:hover {
    background: #00c300;
    border-color: #00c300;
}

.sns-btn-large.sns-twitter {
    border-color: #1da1f2;
    background: rgba(29, 161, 242, 0.2);
}

.sns-btn-large.sns-twitter:hover {
    background: #1da1f2;
    border-color: #1da1f2;
}

.sns-btn-large i {
    margin-right: 10px;
    font-size: 1.3rem;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--color-black);
    padding: 50px 20px 30px;
    border-top: 1px solid rgba(212, 175, 55, 0.3);
}

.footer-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.footer-info h3 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    color: var(--color-gold);
    margin-bottom: 10px;
}

.footer-info p {
    color: var(--color-gray);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.footer-links a {
    color: var(--color-cream);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--color-gold);
}

.footer-links span {
    color: var(--color-gray-dark);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
}

.footer-bottom p {
    color: var(--color-gray);
    font-size: 0.85rem;
}

/* ==========================================
   Floating Button (Mobile Priority)
   ========================================== */
.floating-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 999;
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-orange) 100%);
    color: var(--color-white);
    border: none;
    padding: 15px 30px;
    border-radius: 50px;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.6);
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 10px;
}

.floating-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 12px 40px rgba(212, 175, 55, 0.8);
}

.floating-btn i {
    font-size: 1.2rem;
}

/* Pulse Animation for Floating Button */
@keyframes pulse {
    0% {
        box-shadow: 0 8px 30px rgba(212, 175, 55, 0.6);
    }
    50% {
        box-shadow: 0 12px 40px rgba(212, 175, 55, 0.9);
    }
    100% {
        box-shadow: 0 8px 30px rgba(212, 175, 55, 0.6);
    }
}

.floating-btn {
    animation: pulse 2s infinite;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
    .venue-content {
        grid-template-columns: 1fr;
    }
    
    .artists-grid {
        grid-template-columns: 1fr;
    }
    
    .ticket-info-box {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 20px;
    }
    
    .header-content {
        flex-direction: row;
        gap: 10px;
        justify-content: space-between;
    }
    
    .logo {
        font-size: 0.85rem;
        text-align: left;
        flex: 1;
    }
    
    .header-sns-buttons {
        flex-direction: row;
        gap: 8px;
        flex-shrink: 0;
    }
    
    .header-sns-btn {
        padding: 8px 15px;
        font-size: 0.8rem;
    }
    
    .hero {
        min-height: 600px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-date,
    .hero-venue {
        font-size: 1rem;
    }
    
    .hero-cta-btn {
        padding: 15px 35px;
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1.1rem;
    }
    
    .welcome-content {
        font-size: 1rem;
    }
    
    .welcome-content .highlight {
        font-size: 1.1rem;
        padding: 20px;
    }
    
    .concept-main {
        font-size: 1.4rem;
    }
    
    .concept-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .program-title {
        font-size: 1.1rem;
    }
    
    .artists-grid {
        gap: 40px;
    }
    
    .artist-image-wrapper {
        height: 300px;
    }
    
    .artist-info {
        padding: 20px;
    }
    
    .artist-name {
        font-size: 1.5rem;
    }
    
    .cta-box {
        padding: 30px 20px;
    }
    
    .cta-box h3 {
        font-size: 1.4rem;
    }
    
    .cta-button {
        padding: 15px 35px;
        font-size: 1rem;
    }
    
    .ticket-info-box {
        padding: 30px 20px;
    }
    
    .ticket-details h3,
    .ticket-purchase h3 {
        font-size: 1.4rem;
    }
    
    .ticket-purchase-btn {
        padding: 15px 40px;
        font-size: 1rem;
    }
    
    .sns-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .sns-btn,
    .sns-btn-large {
        width: 100%;
        max-width: 300px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 10px;
    }
    
    .floating-btn {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.7rem;
    }
    
    .concept-card {
        padding: 30px 20px;
    }
    
    .artist-name {
        font-size: 1.3rem;
    }
    
    .logo {
        font-size: 0.75rem;
    }
    
    .header-sns-btn {
        padding: 6px 12px;
        font-size: 0.75rem;
    }
    
    .header-sns-btn i {
        margin-right: 4px;
    }
    
    .floating-btn span {
        display: none;
    }
    
    .floating-btn {
        width: 60px;
        height: 60px;
        border-radius: 50%;
        padding: 0;
        justify-content: center;
    }
    
    .floating-btn i {
        margin: 0;
        font-size: 1.5rem;
    }
}