.btn{cursor:pointer;font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.05em;transition:transform var(--transition-speed-fast),box-shadow var(--transition-speed-fast);text-align:center;border:none;border-radius:0;justify-content:center;align-items:center;font-weight:700;display:inline-flex;position:relative}.btn-primary{background-color:var(--btn-primary-bg);color:var(--btn-primary-text);border:var(--btn-primary-border)solid var(--border-color);box-shadow:var(--btn-primary-shadow)}.btn-primary:hover:not(.btn-disabled):not(:disabled){box-shadow:var(--btn-primary-shadow-hover);transform:translate(-2px,-2px)}.btn-primary:active:not(.btn-disabled):not(:disabled){box-shadow:2px 2px 0px var(--color-accent-secondary);transform:translate(0)}.btn-secondary{background-color:var(--color-text-primary);color:var(--color-bg-card);box-shadow:4px 4px 0px var(--color-accent-secondary);border:none}.btn-secondary:hover:not(.btn-disabled):not(:disabled){box-shadow:6px 6px 0px var(--color-accent-secondary);transform:translate(-2px,-2px)}.btn-secondary:active:not(.btn-disabled):not(:disabled){box-shadow:2px 2px 0px var(--color-accent-secondary);transform:translate(0)}.btn-ghost{color:var(--color-text-primary);border:2px solid var(--border-color);box-shadow:none;background-color:#0000}.btn-ghost:hover:not(.btn-disabled):not(:disabled){background-color:var(--color-accent-secondary);box-shadow:4px 4px 0px var(--color-accent-secondary)}.btn-ghost:active:not(.btn-disabled):not(:disabled){box-shadow:2px 2px 0px var(--color-accent-secondary);transform:translate(0)}.btn-small{padding:var(--space-xs)var(--space-sm);min-width:100px;font-size:12px}.btn-medium{padding:var(--space-sm)var(--space-md);min-width:140px;font-size:14px}.btn-large{padding:20px var(--space-md);min-width:180px;font-size:16px}.btn-disabled,.btn:disabled{background-color:var(--color-accent-secondary);color:var(--color-text-secondary);opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}.btn-disabled:hover,.btn:disabled:hover{box-shadow:none;transform:none}.btn-loading{color:#0000;pointer-events:none}.btn-loading:after{content:"";border:2px solid var(--color-text-primary);border-top-color:#0000;border-radius:50%;width:16px;height:16px;animation:.6s linear infinite blueprint-spin;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.btn-secondary.btn-loading:after{border-color:var(--color-bg-card);border-top-color:#0000}.btn-ghost.btn-loading:after{border-color:var(--color-text-primary);border-top-color:#0000}