/* Reset and base styles */
* {
    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: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: white;
    min-height: 100vh;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

/* Header styles */
header {
    text-align: center;
    padding: 40px 0;
    border-bottom: 2px solid #e9ecef;
    margin-bottom: 30px;
}

header h1 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.2rem;
    color: #6c757d;
    font-weight: 300;
}

/* Welcome text */
.welcome-text {
    background-color: #e3f2fd;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 50px;
    border-left: 4px solid #2196f3;
}

.welcome-text p {
    font-size: 1.1rem;
    color: #1565c0;
    margin: 0;
    line-height: 1.6;
    font-weight: 500;
}

/* Table of contents */
.table-of-contents {
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 40px;
    border-left: 4px solid #007bff;
}

.table-of-contents h2 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.table-of-contents ul {
    list-style: none;
}

.table-of-contents li {
    margin-bottom: 8px;
}

.table-of-contents a {
    color: #007bff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.table-of-contents a:hover {
    color: #0056b3;
    text-decoration: underline;
}

/* Main content */
main {
    margin-bottom: 40px;
}

section {
    margin-bottom: 50px;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

section h2 {
    color: #2c3e50;
    font-size: 1.8rem;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #007bff;
}

.content {
    font-size: 1rem;
    line-height: 1.7;
}

.content p {
    margin-bottom: 15px;
}

.content h3 {
    color: #495057;
    font-size: 1.3rem;
    margin: 25px 0 15px 0;
}

.content ul, .content ol {
    margin: 15px 0;
    padding-left: 30px;
}

.content li {
    margin-bottom: 8px;
}

/* Footer */
footer {
    text-align: center;
    padding: 30px 0;
    border-top: 2px solid #e9ecef;
    color: #6c757d;
    font-size: 0.9rem;
}

/* Contact Form */
#contact-section {
    margin-bottom: 40px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #495057;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-btn {
    background-color: #007bff;
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.submit-btn:hover {
    background-color: #0056b3;
    transform: translateY(-1px);
}

.submit-btn:active {
    transform: translateY(0);
}

/* Success Message */
.success-message {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    margin-top: 20px;
}

.success-message h3 {
    color: #155724;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.success-message p {
    color: #155724;
    font-size: 1.1rem;
    margin: 0;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header {
        padding: 30px 0;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    section {
        padding: 20px;
        margin-bottom: 30px;
    }
    
    section h2 {
        font-size: 1.5rem;
    }
    
    .table-of-contents {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    section {
        padding: 15px;
    }
    
    section h2 {
        font-size: 1.3rem;
    }
}