:root {
    --primary-color: #3b82f6;
    --secondary-color: #1e293b;
    --bg-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    --surface-color: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --radius-lg: 24px;
    --shadow-soft: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 20px 25px -5px rgba(59, 130, 246, 0.1), 0 8px 10px -6px rgba(59, 130, 246, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.app-container {
    width: 100%;
    max-width: 800px;
    text-align: center;
    animation: fadeIn 0.8s ease-out;
}

.hub-header {
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 10px;
}

.hub-logo {
    width: 70px;
    height: 70px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--primary-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.hub-header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.hub-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.hub-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 40px;
    width: 100%;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hub-card {
    background: var(--surface-color);
    text-decoration: none;
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 20px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.hub-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.card-image {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    border-radius: 50%;
    overflow: hidden;
    background: white;
    border: 3px solid white;
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.card-info {
    flex: 1;
    text-align: left;
}

.card-info h2 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.btn-play {
    display: inline-block;
    width: 180px;
    text-align: center;
    padding: 12px 0;
    background: var(--secondary-color);
    color: white;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.hub-card:hover .btn-play {
    background: var(--primary-color);
    transform: scale(1.05);
}

.hub-footer {
    color: var(--text-muted);
    font-size: 0.9rem;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Mobile Adjustments */
@media (max-width: 480px) {
    .hub-header h1 {
        font-size: 2rem;
    }
    
    .hub-grid {
        gap: 12px;
    }
    
    .hub-card {
        padding: 16px;
        gap: 14px;
    }

    .card-image {
        width: 64px;
        height: 64px;
    }
}