/* CSS Variables & Reset */
:root {
    /* Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #141414;
    --bg-hover: #1a1a1a;
    --border-color: #27272a;
    --border-hover: #3f3f46;
    --text-primary: #f4f4f5;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    /* Accents */
    --accent-blue: #3b82f6;
    --accent-blue-hover: #2563eb;
    --accent-beta: #f59e0b;
    --accent-coming: #8b5cf6;
    
    /* Spacing & Typography */
    --radius: 8px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
}

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

button {
    cursor: pointer;
    border: none;
    font-family: inherit;
}

code {
    font-family: ui-monospace, 'SFMono-Regular', 'Menlo', 'Monaco', 'Cascadia Code', monospace;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    padding: 0;
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

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

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--text-primary);
}

/* Main & Sections */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 6rem 0;
    border-top: 1px solid var(--border-color);
}

.section-header {
    margin-bottom: 3.5rem;
}

.section-title {
    font-size: 1.875rem;
    font-weight: 600;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

/* Hero */
.hero {
    padding: 8rem 0 6rem;
}

.hero-content {
    text-align: center;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    letter-spacing: -0.05em;
    line-height: 1;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff 0%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    line-height: 1.5;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--text-primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background-color: #d4d4d8;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    border-color: var(--border-hover);
    background-color: var(--bg-hover);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
    font-size: 0.75rem;
    padding: 0.5rem 1rem;
}

.btn-outline:hover {
    border-color: var(--border-hover);
    background-color: var(--bg-tertiary);
}

.btn-small {
    padding: 0.5rem 0.875rem;
    font-size: 0.75rem;
}

.icon {
    width: 1.25rem;
    height: 1.25rem;
}

/* Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    grid-auto-rows: max-content;
}

/* Card */
.card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card:hover {
    border-color: var(--border-hover);
    background-color: var(--bg-hover);
    transform: translateY(-2px);
}

.card-content {
    flex: 1;
}

.card-header {
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.card-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 4px;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.badge-accent {
    color: var(--accent-blue);
    border-color: rgba(59, 130, 246, 0.3);
}

.badge-beta {
    color: var(--accent-beta);
    border-color: rgba(245, 158, 11, 0.3);
}

.badge-coming {
    color: var(--accent-coming);
    border-color: rgba(139, 92, 246, 0.3);
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.card-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
    margin: 1rem 0;
}

.feature-list {
    list-style: none;
    margin: 1rem 0;
}

.feature-list li {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    padding-left: 1rem;
    position: relative;
    margin-bottom: 0.375rem;
    line-height: 1.4;
}

.feature-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--text-muted);
}

.feature-tag {
    display: inline-block;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

.npm-install {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 0.875rem;
    border-radius: var(--radius);
    font-size: 0.75rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    overflow-x: auto;
    font-family: ui-monospace, 'SFMono-Regular', 'Menlo', monospace;
}

.npm-install code {
    font-size: 0.75rem;
}

.card-footer {
    display: flex;
    gap: 0.75rem;
    margin-top: auto;
    padding-top: 1rem;
    flex-wrap: wrap;
}

.music-download {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
}

.status-loading {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* About Section */
.section-about {
    border-bottom: 1px solid var(--border-color);
}

.about-content {
    max-width: 700px;
}

.about-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.about-content p:last-child {
    margin-bottom: 0;
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    margin-top: 6rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--text-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-container {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0.75rem;
    }

    .hero {
        padding: 5rem 0 4rem;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .hero-description {
        font-size: 1rem;
    }

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

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .section {
        padding: 4rem 0;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .cards-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-left,
    .footer-right {
        width: 100%;
    }
}

@media (max-width: 480px) {
    main {
        padding: 0 1rem;
    }

    .navbar-container {
        padding: 1rem 1rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .card {
        padding: 1.25rem;
    }

    .section-title {
        font-size: 1.25rem;
    }
}