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Share-based compensation - Summary of Valuation Inputs (Details) - 2021 EIP | 12 Months Ended
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Dec. 31, 2025 year $ / shares | Dec. 31, 2024 year $ / shares | Dec. 31, 2023 year $ / shares
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |
Dividend yield (%) | 0.00% | 0.00% | 0.00%
Minimum |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |
Share price at grant date (in dollars per share) | $ / shares | $ 3.04 | $ 3.4 | $ 2.53
Life of option | year | 5.50 | 5.50 | 5.50
Expected volatility (%) | 73.84% | 72.86% | 69.50%
Risk free interest rate (%) | 3.68% | 3.50% | 3.45%
Maximum |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |
Share price at grant date (in dollars per share) | $ / shares | $ 4.73 | $ 4.96 | $ 4.72
Life of option | year | 7.00 | 7.00 | 7.00
Expected volatility (%) | 77.60% | 74.95% | 74.96%
Risk free interest rate (%) | 4.03% | 4.40% | 4.67%

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- Definition The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The option life of share options granted. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The percentage of an expected dividend used to calculate the fair value of share options granted. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The weighted average share price used as input to the option pricing model to calculate the fair value of share options granted. [Refer: Option pricing model [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2025-03-27 + Details
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