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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #ffffff;
    --bg-secondary: #f8f9fa;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: var(--bg-color);
    max-width: 900px;
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    overflow: hidden;
}

header {
    background: var(--primary-color);
    color: white;
    padding: 30px 40px;
    text-align: center;
}

header h1 {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

main {
    padding: 60px 40px;
}

.hero {
    text-align: center;
    margin-bottom: 60px;
}

.greeting {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 30px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 30px;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1rem;
}

.pulse {
    width: 12px;
    height: 12px;
    background: var(--secondary-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.1);
    }
}

.about {
    margin-bottom: 60px;
}

.about h3 {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 40px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.feature {
    text-align: center;
    padding: 30px 20px;
    background: var(--bg-secondary);
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.feature h4 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.feature p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.connect {
    text-align: center;
}

.connect h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.connect-text {
    color: var(--text-light);
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.social-link:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

footer {
    background: var(--bg-secondary);
    padding: 20px 40px;
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    header, main, footer {
        padding-left: 25px;
        padding-right: 25px;
    }

    .greeting {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

    .about h3, .connect h3 {
        font-size: 1.5rem;
    }

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

    .social-links {
        flex-direction: column;
        align-items: stretch;
    }

    .social-link {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
    }

    .greeting {
        font-size: 1.5rem;
    }

    main {
        padding: 40px 25px;
    }
}