:root {
    --primary: #9b4dff;
    --primary-glow: rgba(155, 77, 255, 0.5);
    --secondary: #00d2ff;
    --bg-dark: #0a0b1e;
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-main: #ffffff;
    --text-dim: #b0b0cc;
    --glass-border: rgba(255, 255, 255, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 20% 20%, rgba(155, 77, 255, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(0, 210, 255, 0.1) 0%, transparent 40%);
    min-height: 100vh;
}

header {
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-container {
    animation: fadeInDown 1s ease-out;
}

.logo-main {
    max-height: 80px;
    filter: drop-shadow(0 0 15px var(--primary-glow));
}

main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1.5rem 4rem;
}

.hero-section {
    text-align: center;
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease-out;
}

.hero-section h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-section p {
    color: var(--text-dim);
    font-size: 1.1rem;
}

.app-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.5rem;
    margin-bottom: 3rem;
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    transition: var(--transition);
    animation: fadeInUp 1s ease-out;
}

.app-card:hover {
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.app-visual {
    flex: 1 1 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-icon {
    width: 200px;
    height: 200px;
    border-radius: 40px;
    object-fit: contain;
    background: rgba(0,0,0,0.2);
    padding: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.app-info {
    flex: 2 1 400px;
}

.app-info h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--secondary);
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 210, 255, 0.1);
    color: var(--secondary);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.app-description {
    margin-bottom: 2rem;
    color: var(--text-dim);
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    gap: 0.75rem;
    font-size: 0.95rem;
}

.feature-item i {
    color: var(--primary);
}

.download-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #7c2dff 100%);
    color: white;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

.instructions-section {
    background: rgba(0,0,0,0.2);
    border-radius: 20px;
    padding: 2rem;
    margin-top: 2rem;
}

.instructions-section h3 {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.steps {
    list-style: none;
}

.steps li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-dim);
}

.steps li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary);
}

footer {
    text-align: center;
    padding: 3rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-dim);
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .app-card {
        padding: 1.5rem;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .download-actions {
        justify-content: center;
    }
    
    .feature-item {
        justify-content: center;
    }
}