.auth-section {
    padding: 60px 0;
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #335c81 100%);
}

.auth-container {
    max-width: 450px;
    margin: 0 auto;
    width: 100%;
}

.auth-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    padding: 40px;
}

.auth-title {
    font-size: 32px;
    font-weight: 700;
    color: #333;
    margin-bottom: 30px;
    text-align: center;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 14px;
    font-weight: 600;
    color: #555;
}

.form-input {
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102,126,234,0.1);
}

.form-input.error {
    border-color: #dc3545;
}

.form-input.valid {
    border-color: #28a745;
}

.error-message {
    color: #dc3545;
    font-size: 13px;
    min-height: 18px;
}

.btn-block {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    margin-top: 10px;
}

.auth-links {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
}

.auth-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    margin: 0 5px;
}

.auth-link:hover {
    text-decoration: underline;
}

.form-checkbox {
    flex-direction: row;
    align-items: center;
    gap: 10px;
}

.form-checkbox input {
    width: 18px;
    height: 18px;
}

.auth-container:has(.auth-title:contains("Регистрация")) {
    max-width: 500px;
}

@media (max-width: 768px) {
    .auth-section {
        padding: 40px 20px;
    }
    
    .auth-card {
        padding: 30px 20px;
    }
    
    .auth-title {
        font-size: 28px;
    }
}