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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

header .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 28px;
    font-weight: 700;
}

nav a {
    color: white;
    text-decoration: none;
    margin-left: 30px;
    transition: opacity 0.3s;
}

nav a:hover {
    opacity: 0.8;
}

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

.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 20px;
    text-align: center;
}

.hero h2 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background: white;
    color: #667eea;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
}

.features {
    padding: 80px 20px;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #667eea;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
}

.pricing {
    padding: 80px 20px;
    background: #f8f9fa;
}

.pricing h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #333;
}

.pricing-card {
    background: white;
    padding: 40px;
    border-radius: 10px;
    text-align: center;
    max-width: 400px;
    margin: 0 auto;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.pricing-card h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

.price {
    font-size: 48px;
    color: #667eea;
    font-weight: 700;
    margin-bottom: 10px;
}

.price-period {
    color: #999;
    font-size: 14px;
    margin-bottom: 30px;
}

.pricing-features {
    text-align: left;
    margin-bottom: 30px;
}

.pricing-features li {
    list-style: none;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
    color: #666;
}

.pricing-features li:before {
    content: "✓ ";
    color: #667eea;
    font-weight: bold;
    margin-right: 10px;
}

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 30px 20px;
    margin-top: 50px;
}

footer p {
    opacity: 0.8;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 5px rgba(102, 126, 234, 0.3);
}

.alert {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        text-align: center;
    }

    nav a {
        margin-left: 15px;
    }

    .hero h2 {
        font-size: 32px;
    }

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

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}