/* Základní reset a nastavení */
* {
    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-color: #f5f5f5;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: white;
    padding: 30px 20px;
    text-align: center;
    position: relative;
}

header h1 {
    margin-bottom: 15px;
    font-size: 2.2rem;
}

main {
    padding: 30px;
}

h1 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.8rem;
}

h2 {
    color: #3498db;
    margin: 25px 0 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #ecf0f1;
}

h3 {
    color: #2c3e50;
    margin: 20px 0 10px;
}

p {
    margin-bottom: 15px;
    font-size: 1.05rem;
}

pre {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 5px;
    padding: 15px;
    overflow-x: auto;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

section {
    margin-bottom: 30px;
}

.button {
    display: inline-block;
    background-color: #3498db;
    color: white;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    margin: 10px 0;
}

.back-button {
    background-color: #e74c3c;
    position: absolute;
    top: 20px;
    right: 20px;
}

.button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.back-button:hover {
    background-color: #c0392b;
}

.pozadi {
    background-color: #e8f4fc;
    padding: 10px;
    border-radius: 5px;
    border-left: 4px solid #3498db;
}

footer {
    background-color: #34495e;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 30px;
}

/* Responzivní design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    header {
        padding: 20px 15px;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    main {
        padding: 20px;
    }
    
    .back-button {
        position: relative;
        top: 0;
        right: 0;
        margin-top: 15px;
    }
}