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

:root {
    --brand-gradient: linear-gradient(135deg, #ff7af5, #7af3ff);
    --primary-color: #ff7af5;
    --secondary-color: #7af3ff;
    --dark-bg: #1a1a1a;
    --gray-bg: #2d2d2d;
    --text-light: #ffffff;
    --text-dark: #333333;
    --border-radius: 12px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--dark-bg);
    color: var(--text-light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    height: 40px;
    width: auto;
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 4px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    transition: var(--transition);
}

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

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

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

.nav-drawer {
    position: fixed;
    top: 70px;
    right: -300px;
    width: 250px;
    height: calc(100vh - 70px);
    background: var(--gray-bg);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    padding: 20px;
    gap: 15px;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-drawer.open {
    right: 0;
}

.nav-drawer a {
    color: var(--text-light);
    text-decoration: none;
    padding: 10px 15px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.nav-drawer a:hover {
    background: var(--brand-gradient);
}

/* Main Content */
main {
    margin-top: 70px;
    min-height: calc(100vh - 70px);
}

/* Hero Section */
.hero {
    position: relative;
    height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
}

.hero-content {
    text-align: center;
    z-index: 1;
    background: rgba(0, 0, 0, 0.6);
    padding: 30px;
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.hero h1 {
    font-size: 3rem;
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
}

/* Page Header */
.page-header {
    padding: 40px 0;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.page-header h1 {
    font-size: 2.5rem;
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Sections */
.about, .navigation-buttons {
    padding: 60px 0;
}

.about h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    text-align: center;
}

.about p {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    line-height: 1.8;
}

/* Button Grid */
.button-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: 1fr;
}

.nav-button {
    display: block;
    padding: 30px;
    background: var(--gray-bg);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--text-light);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-button:hover {
    background: var(--brand-gradient);
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.nav-button h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

/* Music Tabs */
.music-tabs {
    padding: 40px 0;
}

.tab-buttons {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tab-button {
    padding: 15px 30px;
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: var(--transition);
    font-size: 1rem;
}

.tab-button.active {
    border-bottom-color: var(--primary-color);
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Music Grid */
.music-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: 1fr;
}

.music-card {
    background: var(--gray-bg);
    border-radius: var(--border-radius);
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.music-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--border-radius);
    margin-bottom: 15px;
}

.music-card h3 {
    margin-bottom: 10px;
    color: var(--text-light);
}

.music-card p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 15px;
}

.music-card audio {
    width: 100%;
    margin-bottom: 10px;
}

.music-card iframe {
    width: 100%;
    height: 152px;
    border-radius: var(--border-radius);
}

/* MV Gallery */
.mv-gallery {
    padding: 40px 0;
}

.masonry-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: 1fr;
}

.mv-item {
    background: var(--gray-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.mv-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.mv-item img {
    width: 100%;
    height: auto;
    display: block;
}

.mv-item-info {
    padding: 15px;
}

.mv-item h3 {
    color: var(--text-light);
    margin-bottom: 5px;
}

.mv-item p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 800px;
    background: var(--gray-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 2rem;
    cursor: pointer;
    z-index: 2001;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Coming Soon */
.coming-soon {
    padding: 40px 0;
    text-align: center;
}

.coming-soon-card {
    background: var(--gray-bg);
    border-radius: var(--border-radius);
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.coming-soon h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.game-controls {
    margin-top: 30px;
}

.controls-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    max-width: 400px;
    margin: 20px auto 0;
}

.control-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.key {
    width: 40px;
    height: 40px;
    background: var(--brand-gradient);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
}

/* Concept Content */
.concept-content {
    padding: 40px 0;
}

.markdown-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3 {
    color: var(--text-light);
    margin: 30px 0 15px 0;
}

.markdown-content h1 {
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.markdown-content p {
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
}

/* Footer */
.footer {
    background: var(--gray-bg);
    padding: 30px 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: auto;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-links a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 1.5rem;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--primary-color);
    transform: scale(1.2);
}

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

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

/* Responsive Design */
@media (min-width: 768px) {
    .button-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .music-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .masonry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .controls-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer .container {
        flex-wrap: nowrap;
    }
}

@media (min-width: 1024px) {
    .masonry-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .music-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .hero h1 {
        font-size: 4rem;
    }
    
    .nav-drawer {
        position: static;
        width: auto;
        height: auto;
        background: none;
        padding: 0;
        flex-direction: row;
        gap: 30px;
        border: none;
    }
    
    .menu-toggle {
        display: none;
    }
    
    .nav-container {
        justify-content: space-between;
    }
}