:root {
    --primary: #2c3e50;
    --secondary: #3498db;
    --light: #ecf0f1;
    --dark: #2c3e50;
    --success: #27ae60;
    --warning: #f39c12;
    --danger: #e74c3c;
}

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

body {
    font-family: 'Roboto', sans-serif;
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

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

header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 40px 0;
    text-align: center;
    margin-bottom: 40px;
    border-radius: 0 0 20px 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
}

.plans-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 25px;
    margin-bottom: 50px;
}

.plan-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    width: 280px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.plan-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.plan-header {
    padding: 20px;
    text-align: center;
    color: white;
}

.basic .plan-header {
    background: linear-gradient(135deg, #3498db, #2980b9);
}

.intermediate .plan-header {
    background: linear-gradient(135deg, #f39c12, #e67e22);
}

.advanced .plan-header {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
}

.complete .plan-header {
    background: linear-gradient(135deg, #9b59b6, #8e44ad);
}

.plan-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.plan-price {
    font-size: 2rem;
    font-weight: 300;
}

.plan-price span {
    font-size: 1rem;
}

.plan-features {
    padding: 20px;
}

.feature {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.feature-name {
    font-weight: 500;
    margin-bottom: 5px;
    color: var(--dark);
}

.feature-value {
    color: #666;
}

.plan-button {
    display: block;
    text-align: center;
    padding: 12px;
    margin: 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.3s;
}

.basic .plan-button {
    background: #3498db;
    color: white;
}

.intermediate .plan-button {
    background: #f39c12;
    color: white;
}

.advanced .plan-button {
    background: #27ae60;
    color: white;
}

.complete .plan-button {
    background: #9b59b6;
    color: white;
}

.plan-button:hover {
    opacity: 0.9;
}

.comparison-table {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-bottom: 50px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

th {
    background-color: var(--primary);
    color: white;
    font-weight: 500;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

.highlight {
    font-weight: 500;
    color: var(--secondary);
}

footer {
    text-align: center;
    padding: 30px 0;
    background-color: var(--dark);
    color: white;
    margin-top: 50px;
}

.contact-info {
    margin-top: 20px;
}

.contact-info a {
    color: var(--secondary);
    text-decoration: none;
}

@media (max-width: 768px) {
    .plans-container {
        flex-direction: column;
        align-items: center;
    }
    .plan-card {
        width: 100%;
        max-width: 350px;
    }
    table {
        display: block;
        overflow-x: auto;
    }
}